Siemens SIMATIC S7-1200

Technical specifications
A.10 Technology modules
Easy Book
Manual, 03/2014, A5E02486774-AF
339
Technical data
CM 1241 RS232
Flow control
Hardware, software
Wait time
0 to 65535 ms
Table A- 74 Power supply
Technical data
CM 1241 RS232
Power loss (dissipation)
1 W
From +5 VDC
200 mA
Table A- 75 RS232 connector (male)
Pin
Description
Connector
(male)
Pin
Description
1 DCD
Data carrier detect: Input
6 DSR
Data set ready: Input
2 RxD
Received data from DCE: Input
7 RTS
Request to send: Output
3 TxD
Transmitted data to DCE: Output
8 CTS
Clear to send: Input
4 DTR
Data terminal ready: Output
9 RI
Ring indicator (not used)
5 GND Logic ground SHELL Chassis ground
A.10
Technology modules
A.10.1
SM 1278 4xIO-Link Master SM
A.10.1.1
SM 1278 4xIO-Link Master signal module specifications
Table A- 76 General specifications
Technical data
SM 1278 4xIO-Link Master signal module
Order number
6ES7 278-4BD32-0XB0
Dimensions W x H x D (mm)
45 x 100 x 75
Weight
150 grams
General information
I&M data Yes; IM0 to IM3
Supply voltage
Rated voltage (DC) 24 VDC
Valid range low limit (DC) 19.2 V; 20.5 V if IO-Link is used (the supply voltage for
IO-Link devices on the master must be at least 20 V)