Siemens SIMATIC S7-200 System Manual page 468

S7-200 Programmable Controller System Manual
S7-200 CPUs that Support Intelligent Modules
The EM 253 Position module is an intelligent expansion module designed to work with the S7-200
CPUs shown in Table A-54.
Table A-54 EM 253 Position Module Compatibility with S7-200 CPUs
CPU
CPU 222 Rel. 1.10 or greater
CPU 224 Rel. 1.10 or greater
CPU 224XP Rel 2.0 or greater
CPU 226 Rel. 1.00 or greater
EM 253 Position Module Status LEDs
The Status LEDs for the Position Modules are shown in Table A-55.
Table A-55 Position Module Status LEDs
Local I/O LED
- - MF
- - MG
- - PWR
Input STP
Input RPS
Input ZP
Input LMT- -
Input LMT +
Output P0
Output P1
Output DIS
Output CLR
Figure A-34 EM 253 Position Module
454
CPU 222 DC/DC/DC and CPU 222 AC/DC/Relay
CPU 224 DC/DC/DC and CPU 224 AC/DC/Relay
CPU 224XP DC/DC/DC and CPU 224XP DC/DC/Relay
CPU 226 DC/DC/DC and CPU 226 AC/DC/Relay
Color
Red Illuminated when module detects a fatal error
Green Illuminated when there is no module fault, and flashes at 1 Hz rate when a
configuration error is detected
Green Illuminated when 24 VDC is supplied on the L+ and M terminals of the module
Green Illuminated when the stop input is on
Green Illuminated when the reference point switch input is on
Green Illuminated when the zero pulse input is on
Green Illuminated when the negative limit input is on
Green Illuminated when the positive limit input is on
Green Illuminated when the P0 output is pulsing
Green Illuminated when the P1 output is pulsing or when this output indicates positive
motion
Green Illuminated when the DIS output is active
Green Illuminated when the clear deviation counter output is active
Description
Function Description