Siemens SIMATIC S7-200 System Manual page 429

Figure A-14 Wiring Diagrams for Analog Expansion Modules
Analog LED Indicators
The LED indicators for the analog modules are shown in Table A-19.
Table A-19 Analog LED Indicators
LED Indicator
24 VDC Power Supply Good
Tip
The state of user power is also reported in Special Memory (SM) bits. For more information, see
Appendix D, SMB8 to SMB21 I/O Module ID and Error Registers.
EM 235 Analog Combination 4 Inputs/1 Output
(6ES7 235- -0KD22- -0XA0)
Voltage
0- -20mA
Unused
+- -
+
RA A+ A- - RB B+ B- - RC C+ C- - RD D+
250 Ohms (built-in)
M L+ M0 V0 I0 Gain
+
24
VDC
Power
ON
No faults
Technical Specifications
Current
PS PS L+ M
4- -20mA
--
--
M
D- -
Configuration
Offset
No 24 VDC power
Appendix A
OFF
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