based on ET200M

6AG11531AA032XB0

SIEMENS ET200M, SIPLUS DP ET200M IM153-1 -40...+70°C start up Temp -25°C with conformal coating based on 6ES7153-1AA03-0XB0 . INTERFACE FOR ET 200M, FOR MAX. 8 S7-300 MODULES

6AG11532BA102XY0

SIEMENS ET200M, SIPLUS ET 200M IM153-2 (*BA02) T1 RAIL -25 ... +55°C T1 with 70°C for 10 min with conformal coating based on 6ES7153-2BA10-0XB0 . Connection ET 200M IM 153-2 High Feature for max. 12 S7-300 modules with redundancy capability, Timestamping suitable for isochronous mode Operation New features: up to 12 modules can be used Slave Initiative for Drive ES

6AG11532BA107XB0

SIEMENS ET200M, SIPLUS ET 200M IM 153-2 (*BA02) -40...+70°C start up temperature:-25°C with conformal coating based on 6ES7153-2BA10-0XB0 . Connection ET 200M IM 153-2 High Feature for max. 12 S7-300 modules with redundancy capability, Time stamp. suitable for isochronous mode New features: up to 12 modules can be used Slave Initiative for Drive ES and Switch ES Expanded quantity structure for HART auxiliary variables Operation of the 64-channel modules 32 signals/slot

6AG11534AA017XB0

SIEMENS ET200M, SIPLUS ET 200M IM 153-4 PN IO -25...+70°C with conformal coating based on 6ES7153-4AA01-0XB0 . for max. 12 S7-300 modules, extended functions: Isochronous real-time Communication Class 1 and 2, module replacement without PG operation without MMC, maintenance Support of new IO modules

6AG11534BA007XB0

SIEMENS ET200M, SIPLUS ET 200M IM 153-4 PN IO HF -40...+70°C start up temperature:-25°C with conformal coating based on 6ES7153-4BA00-0XB0 . DP, Connection ET 200M for max. 12 S7-300 modules, supports fail-safe module, HART modules, shared device, Medium Redundancy Protocol

6AG11555AA002AC0

SIEMENS ET200M, SIPLUS ET 200MP IM 155-5 PN HF -40...+60 °C With conformal coating based on 6ES7155-5AA00-0AC0 . PROFINET IO device interface module IM 155-5 PN HF, for ET 200MP electronic modules; Up to 12 IO modules without PS; Up to 30 IO modules with additional PS; Integrated 2-port switch; RJ45 shared device; MRP; IRT >=0.25 ms; Isochronous mode FW update; IM0...3; Prioritized run-up S2 redundancy; Shared device with 4 controllers

6AG11555BA002AB0

SIEMENS ET200M, SIPLUS ET 200MP -40...+60°C with conformal coating based on 6ES7155-5BA00-0AB0 . PROFIBUS connection IM 155-5 DP ST for max. 12 S7-1500 modules

6AG11957HA002XA0

SIEMENS ET200M, SIPLUS ET 200M active bus module 1x ps+1x IM 153 -40...+70°C based on 6ES7195-7HA00-0XA0

6AG11957HB007XA0

SIEMENS ET200M, SIPLUS ET 200M active bus module 2x 40 mm modules -40...+70°C based on 6ES7195-7HB00-0XA0

6AG11957HC002XA0

SIEMENS ET200M, SIPLUS ET 200M active bus module for holding an 80 mm wide I/O module -40...+70°C with conformal coating based on 6ES7195-7HC00-0XA0 . for removal and insertion function

6AG11957HD102XA0

SIEMENS ET200M, SIPLUS ET 200M active bus module For holding 2 IM 153-2 Red -40...+70°C with conformal coating based on 6ES7195-7HD10-0XA0 . for removal and insertion function during RUN operating time

6AG11957HG002XA0

SIEMENS ET200M, SIPLUS ET 200M partition F -25...+60°C with conformal coating based on 6ES7195-7HG00-0XA0

6AG11957KF002XA0

SIEMENS ET200M, SIMATIC S7-300 safety protector -25...+60°C with conformal coating based on 6ES7195-7KF00-0XA0 . Safety protector between F and standard modules With redundant ET 200M interface modules, use only with partition

6AG13328TF012AB0

SIEMENS ET200M, SIPLUS S7-300 SM 332 8AO HART -25...+60°C with conformal coating based on 6ES7332-8TF01-0AB0 . Analog output 8 AO 0/4-20 mA HART, for ET 200M with IM 153-2, IM 153-2, 20-pole Functions: FW update, HART auxiliary variables, redundancy, local diagnostic buffer with time stamping, Requirement: PCS 7 V7.0, SP1

6AG15926EF002AA0

SIEMENS ET200M, SIPLUS S7-1500 E-CODING ELEMENTS TYPE F spare part -25 ... +60°C with conformal coating based on 6ES7592-6EF00-1AA0 . 5 E-CODING ELEMENTS TYPE F FOR ET 200MP "MODULE F-DI, F-DQ; 5 UNITS PER" PACKING UNIT

6ES71531AA030XB0

SIEMENS ET200M, SIMATIC DP, Connection IM 153-1, for ET 200M, for max. 8 S7-300 modules

6ES71532AR040XA0

SIEMENS ET200M, SIMATIC DP, ET 200M Red. Bundle Consisting of: 2x IM 153-2HF (6ES7153-2BA10-0XB0), 1x bus module in/in (6ES7195-7HD10-0XA0)

6ES71532BA100XB0

SIEMENS ET200M, SIMATIC DP, Connection ET 200M IM 153-2 High Feature for max. 12 S7-300 modules with redundancy capability, Timestamping suitable for isochronous mode New features: up to 12 modules can be used Slave INITIATIVE for Drive ES and Switch ES Expanded quantity structure for HART auxiliary variables Operation of the 64-channel modules 32 signals/slot +++Observe compatibility notes in manual+++

6ES71532BA700XB0

SIEMENS ET200M, SIMATIC DP, interface DP/PA-Link and ET200M IM153-2 HF for extended temperature range for max. 12 S7-300 modules with redundancy capability, Timestamping suitable for isochronous mode New features: up to 12 modules can be used Slave Initiative for Drive ES and Switch ES Expanded quantity structure for HART auxiliary variables Operation of the 64-channel modules 32 signals / slot +++ Observe compatibility instructions in manual +++

6ES71534AA010XB0

SIEMENS ET200M, SIMATIC DP, Connection ET 200M IM 153-4 PN IO for max. 12 S7-300 modules, extended functions: Isochronous real-time Communication Class 1 and 2, module replacement without PG operation without MMC, maintenance Support of new IO modules

6ES71534BA000XB0

SIEMENS ET200M, SIMATIC DP, Connection ET 200M IM 153-4 PN IO High Feature for max. 12 S7-300 modules, supports fail-safe module, HART modules, shared device, Medium Redundancy Protocol

6ES71555AA000AA0

SIEMENS ET200M, SIMATIC ET 200MP PROFINET IO device Interface module IM 155-5 PN BA for ET 200MP electronic modules; up to 12 IO modules; Integrated 2-port switch; RJ45 Shared Device with 2 IO controllers, MRP; FW update; I&M0...3

6ES71555AA000AC0

SIEMENS ET200M, SIMATIC ET 200MP. PROFINET IO device Interface module IM 155-5 PN HF, for ET 200MP electronic modules; up to 12 IO modules without PS; up to 30 IO modules with additional PS; Integrated 2-port switch; RJ45 shared device; MRP; IRT >=0.25 ms; Isochronous mode FW update; I&M0...3; prioritized startup, S2 redundancy; shared device with 4 controllers

6ES71555AA010AB0

SIEMENS ET200M, SIMATIC ET 200MP. PROFINET IO-DEVICE INTERFACEMODULE IM 155-5 PN ST FOR ET 200MP ELEKTRONIKMODULES; UP TO 12 IO-MODULES WITHOUT ADDITIONAL PS; UP TO 30 IO- MODULES WITH ADDITIONONAL PS SHARED DEVICE; MRP; IRT >=0.25MS; ISOCHRONICITY FW-UPDATE; I&M0...3; FSU WITH 500MS

6ES71555BA000AB0

SIEMENS ET200M, SIMATIC ET 200MP. PROFIBUS connection IM 155-5 DP ST for max. 12 S7-1500 modules Including PROFIBUS connection plug (6ES7972-0BB70-0XA0)

6ES71946KA000XA0

SIEMENS ET200M, SIMATIC DP, Y cable for ET 200 distributed I/O For double connection of I/Os via single cable to ET 200 5-pole M12, 200mm

6ES71946KB000XA0

SIEMENS ET200M, SIMATIC DP, Y cable, for fail-safe distributed I/O ET 200, IP 65/67, for connection of single channel sensors (1 to1 evaluation) 5-pin M12, 200mm, 1 piece per packing unit

6ES71951GA000XA0

SIEMENS ET200M, SIMATIC DP, mounting rail for ET 200M, 482.6 mm long, for holding bus modules for removal and insertion function

6ES71951GC000XA0

SIEMENS ET200M, SIMATIC DP, mounting rail for ET 200M, 2000 mm long, for holding bus modules for removal and insertion function

6ES71951GF300XA0

SIEMENS ET200M, SIMATIC DP, mounting rail for ET 200M, 530 mm long, for holding bus modules for removal and insertion function

6ES71951GG300XA0

SIEMENS ET200M, SIMATIC DP, mounting rail for ET 200M, 620 mm long, for holding bus modules for removal and insertion function

6ES71951JA000XA0

SIEMENS ET200M, SIMATIC DP,Cover f. bus module ET 200M, 4x backplane bus covers 1x bus module cover for removal and insertion function

6ES71951KA000XA0

SIEMENS ET200M, SIMATIC DP, Ex partition for ET 200M, for plugging onto a bus module, for removal and insertion function

6ES71957HA000XA0

SIEMENS ET200M, SIMATIC DP, bus module f. ET200M for holding a PS and an IM153 for the function Pulling and plugging during RUN operating mode incl. bus module cover

6ES71957HB000XA0

SIEMENS ET200M, SIMATIC DP, Bus module for ET 200M for holding two 40 mm wide I/O modules for removal and insertion function

6ES71957HD100XA0

SIEMENS ET200M, SIMATIC DP, Bus module for ET 200M for holding 2 IM153-2 red. for removal and insertion function during RUN operating time

6ES71957KF000XA0

SIEMENS ET200M, SIMATIC S7, Safety protector between F and standard modules With redundant ET 200M interface modules, use only with partition

6ES73317TB100AB0

SIEMENS ET200M, SIMATIC DP, HART analog input SM 331, 2 AI, 0/4 - 20 mA HART, as of HART Rev. 5.0, for ET200M with IM 153-2, 1 x 20-pole

6ES73317TF010AB0

SIEMENS ET200M, SIMATIC DP, HART analog input SM 331, 8 AI, 0/4 - 20 mA HART, for ET200M with IM153-2, 1 x 20-pole, Functions: FW update, HART auxiliary variables, redundancy, local diagnostic buffer with time stamping,

6ES73325TB100AB0

SIEMENS ET200M, SIMATIC DP, HART analog output, SM 332, 2 AO, 0/4 - 20 mA HART, as of HART Rev. 5.0, for ET200M with IM 153-2, 1 x 20-pole

6ES73328TF010AB0

SIEMENS ET200M, SIMATIC DP, HART analog output, SM 332, 8 AO, 0/4 - 20 mA HART, for ET200M with IM153-2, IM 153-2, 20-pole Functions: FW update, HART auxiliary variables, redundancy, local diagnostic buffer with time stamping,

6ES75280AA707AA0

SIEMENS ET200M, SIMATIC ET 200MP, spare part Front door for IM 155-5 (6ES7155-5AA00-0AB0) 5 units per packing unit

6ES75926EF001AA0

SIEMENS ET200M, SIMATIC DP, spare part 5 E coding keys type F for ET 200MP modules F-DI, F-DQ; 5 units per packing unit

6ES76501AA522XX0

SIEMENS ET200M, SIMATIC PCS7, red. AI8 MTA, interface module for redundant connection of ET200M Analog input modules 6ES7331-7NF00-0AB0 and 6ES7331-7NF10-0AB0, 8 channels, fused individually redundant supply with fusing, LED displayed Measuring range: 0/4-20 mA, 20 mA, 1-5 V, +/- 5 V or +/- 10 V

6ES76501AA612XX0

SIEMENS ET200M, SIMATIC PCS7, red. AI8 HART MTA interface module for redundant interface for ET200M AI8-HART-BG 6ES7331-7TF01-0AB0 8 channels, redundant power supply with fusing, LED displays, measuring range: 0-20 mA without HART, 4-20 mA with HART

6ES76501AB512XX0

SIEMENS ET200M, SIMATIC PCS7, red. AO8 MTA, interface module for redundant connection of ET200M Analog output module 6ES7332-5HF00-0AB0, 8 channels, redundant supply with LED display and fusing output range: 4-20 mA

6ES76501AB612XX0

SIEMENS ET200M, SIMATIC PCS7, red. AO8 HART MTA interface module for redundant interface for ET200M AI8-HART-BG 6ES7332-8TF01-0AB0, 8 channels, redundant power supply with fusing, LED displays, measuring range: 0-20 mA without HART, 4-20 mA with HART

6ES76501AC113XX0

SIEMENS ET200M, SIMATIC PCS7, red. DI16 MTA interface module for redundant connection of the ET200M module 6ES7321-7BH01-0AB0 16 channels, fused individually redundant supply with fuse protection and LED displays measuring range: 24 V DC

6ES76501AD112XX0

SIEMENS ET200M, SIMATIC PCS7, red. DO 16 MTA, interface module for redundant connection of ET200M Digital output module 6ES7322-8BH10-0AB0, 16 channels, redundant supply with LED display and fusing output range: 24 V DC

6ES76501AF512XX0

SIEMENS ET200M, SIMATIC PCS7, TC MTA Connection module for thermocouples for ET200M TC module 6ES331-7PF11-0AB0 8 channels, temperature compensation integrated, fused supply with LED display, measuring range: thermocouples

6ES76501AG512XX0

SIEMENS ET200M, SIMATIC PCS7, RTD MTA Connection module for resistance thermometer for ET200M RTD module 6ES7331-7PF01-0AB0 8 channels, 2, 3 or 4-wire connection fused supply with LED display Measuring range: Resistance thermometer:

6ES76501AH625XX0

SIEMENS ET200M, SIMATIC PCS7, red. F-AI6 MTA, interface module for redundant connection of the ET200M F-AI6 HART module 6ES7336-4GE00-0AB0, 6 channels with electr. current limitation redundant power supply with fusing, LED displays, Measuring range: 0/4-20 mA,

6ES76501AK117XX0

SIEMENS ET200M, SIMATIC PCS7, red. F-DI MTA interface module for redundant connection of the ET200M fail-safe module 6ES7326-1BK02-0AB0 12/24 channels, individually fused, redundant power supply with fusing, LED displays Measuring range: 24 V DC

6ES76501AL116XX0

SIEMENS ET200M, SIMATIC PCS7, red. F-DO10 mTA interface module for redundant connection of the ET200M F module 6ES7326-2BF10-0AB0, 10 channels, individually fused, redundant power supply with fusing, LED displays, output range 24 V DC

6ES76501AM303XX0

SIEMENS ET200M, SIMATIC PCS7, red. DO 16 relay MTA, interface module for redundant connection of the ET200M DO 16 module 6ES7322-8BH10-0AB0 16 channels, relay output MTA, redundant supply with fusing, LED displays output: 24-150 V DC/120-230 V AC

6ES76501AM316XX0

SIEMENS ET200M, SIMATIC PCS7, red. F-DO10 relay MTA, interface module for redundant connection of the ET200M F-DO10 6ES7326-2BF10-0AB0, 10 channels, relay, redundant supply with fusing, LED displays Relay output: 24-150 V DC/120-220 V AC

6ES76501BA020XX0

SIEMENS ET200M, SIMATIC PCS7, red. Power MON. monitoring module for input voltage monitoring of the ET200M interface module Contact load: Max. 30 V DC, 0.5 A

6ES76540XX101XA0

SIEMENS ET200M, SIMATIC PCS 7 I/O subsystem ZuS, 8 I/O for ET200M for removing and inserting the modules during operation, consisting of mounting rail 482 mm 19" (6ES7195-1GA00-0XA0) for active bus modules, bus module PS/IM (6ES7195-7HA00-0XA0) and IM153-2 High Feature (6ES7153-2BA70-0XB0)

6ES76540XX101XB0

SIEMENS ET200M, SIMATIC PCS 7 I/O subsystem ZuS, 12 I/O for ET200M with removal and insertion of the modules in operation, consisting of mounting rail (6ES7195-1GG30-0XA0) for active bus modules 620 mm long, bus module PS/IM (6ES7195-7HA00-0XA0) and IM153-2 High Feature (6ES7153-2BA70-0XB0)

6ES76540XX200XA0

SIEMENS ET200M, SIMATIC PCS 7 Redundant I/O subsystem ZuS for ET 200M with removing and inserting the modules during operation Consisting of: 2x IM153-2HF Outdoor (6ES71532BA700XB0) 1x bus module IM/IM outdoor (6ES71957HD800XA0)

6ES79223BD000AN0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB socket for ET200M; 0.50 mm2 Length = 3 m

6ES79223BD000AS0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40-pole (6ES7392-1AM00-0AA0) on 50 pole D-sub socket for ET 200M; 0.14 mm2 Length = 3 m

6ES79223BD000AT0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB pin for ET200M Length = 3 m

6ES79223BD000AU0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 20 pole (6ES7392-1AJ00-0AA0) on 25 pole D-SUB socket for ET200M; 0.50 mm2 Length = 3 m

6ES79223BD000BA0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB socket for ET200M; 0.14 mm2 Length = 3 m

6ES79223BD000BB0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB socket for ET200M; 0.14 mm2 Length = 3 m

6ES79223BD010AM0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 20 pole (6ES7392-1AJ00-0AA0) on 25 pole D-SUB socket for ET200M; 0.14 mm2 Length = 3 m

6ES79223BJ000AN0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB socket for ET200M; 0.50 mm2 Length = 8 m

Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB socket f

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40-pole (6ES7392-1AM00-0AA0) on 50 pole D-sub socket for ET 200M; 0.14 mm2 Length = 8 m

6ES79223BJ000AT0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB pin for ET200M Length = 8 m

6ES79223BJ000AU0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 20 pole (6ES7392-1AJ00-0AA0) on 25 pole D-SUB socket for ET200M; 0.50 mm2 Length = 8 m

6ES79223BJ000BA0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB socket for ET200M; 0.14 mm2 Length = 8 m

6ES79223BJ000BB0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 40 pole (6ES7392-1AM00-0AA0) on 25 pole D-SUB socket for ET200M; 0.14 mm2 Length = 8 m

6ES79223BJ010AM0

SIEMENS ET200M, Cable with front connector for SIMATIC S7-300 20 pole (6ES7392-1AJ00-0AA0) on 25 pole D-SUB socket for ET200M; 0.14 mm2 Length = 8 m

6GK73432AH010XA0

SIEMENS ET200M, SIMATIC NET, CP 343-2 Communications processor for Connection of SIMATIC S7-300 and ET 200M to AS-Interface according to AS-Interface Specification V3.0

6GK73432AH110XA0

SIEMENS ET200M, SIMATIC NET, CP 343-2P Communications processor for Connection of SIMATIC S7-300 and ET 200M to AS-Interface configurable with STEP 7 according to AS-Interface Specification V3.0

6GT20020GA10

SIEMENS ET200M, MOBY communication module ASM475 for SIMATIC S7 300 and ET200M parameterizable (without front connector)

6ZB23200AJ00

SIEMENS ET200M, PCS 7 TRAININGS I/O BOX ADDITIONAL TRAININGS EQUIPMENT FOR TRAINING HOW TO ACCESS TO SENSORS AND ACTUATORS, WHICH ARE CONNECTED TO A DISTRIBUTED PERIPHERY DEVICE ET 200M. CONNECTION TO SIGNAL MODULES VIA CENTRAL CABLE AND 4 FRONT END PLUGS.

6ZB23200AN00

SIEMENS ET200M, SIMATIC PCS 7 CASE LEVEL 2, V8.1 STANDARD TRAINING EQUIPMENT FOR SIMATIC PCS 7 COURSE PORTFOLIO. TRANSPORTABLE CASE WITH IPC647D, CP1623, 24ZOLL MONITOR USB KEYBOARD AND MOUSE; AS RACK (CPU 410-5H AND ETHERNET CP 443-1); ET 200M ON PROFIBUS DP; WITH 4 SIGNAL MODULES; ET 200M ON PROFINET; WITH 2 SIGNAL MODULES PCS 7 TRAINING I/O BOX 2 SWITCHES FOR PLANT BUS AND TERMINALBUS

6ZB23200AQ00

SIEMENS ET200M, PCS 7 add-on module field devices PROFINET, HART and PROFIBUS PA Standard training device for training portfolio PCS 7. Transportable case with the following PROFINET components 1 ET 200SP HA PROFINET IO Dev. 1 digital input module 1 configurable I/O module 1 SIMATIC Compact Field Unit ET 200M PROFIBUS slave with 1 HART analogue input module, 2 DP/PA couplers; 1 active field distributor AFD4; 1 Pt100 temperature sensor and 1 transmitter TH300 for HART; 1 transmitter TH400 for PB PA Note: The case does not permit the simultaneous setup of all configurations

7MH49002AA01

SIEMENS ET200M, SIWAREX FTA WEIGHING ELECTRONIC WITH VERIFICATION CAPABILITY.FOR AUTOMATIC AND NON AUTOMATIC . WEIGHING APPLICATIONS. USABLE FOR S7-300 AND ET200M. EC-CERTIFICATE OF CONFORMITY 3 X 6000D. . APPLICATIONS: . RAPID DOSING, FILLING/BAGGING AND LOADING. ATTENTION: FOR LEGAL FOR TRADE APPLICATIONS PLEASE FOLLOW THE LOCAL LAWS APPLYING IN THE COUNTRY OF LEGAL VERIFICATION ! - APPROPRIATE MMC-CARD: ONLY FOR LEGAL-FOR-TRADE APPLICATIONS R76, R51 AND R107: 7MH4900-2AY20

7MH49003AA01

SIEMENS ET200M, SIWAREX FTC WEIGHING ELECTRONIC FOR FORCE MEASUREMENT, BELT SCALE, LOSS-IN-WEIGHT SCALE AND FLOW RATE METER. WITHOUT VERIFICATION CAPABILITY USABLE FOR S7-300 AND ET200M

7MH49501AA01

SIEMENS ET200M, SIWAREX U WEIGHING ELECTRONICS (SINGLE CHANNEL VERSION) * FOR CONNNECTING ONE SCALE * FOR SIMATIC S7-300 AND ET200M * RS232 INTERFACE FOR CONNECT. OF A PC * TTY INTERFACE FOR REMOTE DISPLAY CONNECTION WITH BUS CONNECTOR

7MH49502AA01

SIEMENS ET200M, SIWAREX U WEIGHING ELECTRONICS (TWO-CHANNEL VERSION) * FOR CONNNECTING TWO SCALES * FOR SIMATIC S7-300 AND ET200M * RS232 INTERFACE FOR CONNECT. OF A PC * TTY INTERFACE FOR REMOTE DISPLAY CONNECTION WITH BUS CONNECTOR