Specifications

Technical Specifications Appendix A
451
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-52.
Table A-52 EM 253 Position Module Compatibility with S7-200 CPUs
CPU Description
CPU 222 Rel. 1.10 or greater CPU 222 DC/DC/DC and CPU 222 AC/DC/Relay
CPU 224 Rel. 1.10 or greater CPU 224 DC/DC/DC and CPU 224 AC/DC/Relay
CPU 224XP Rel 2.0 or greater CPU 224XP DC/DC/DC and CPU 224XP DC/DC/Relay
CPU 226 Rel. 1.00 or greater CPU 226 DC/DC/DC and CPU 226 AC/DC/Relay
EM 253 Position Module Status LEDs
The Status LEDs for the Position Modules are shown in Table A-53.
Table A-53 Position Module Status LEDs
Local I/O LED Color Function Description
-- MF Red Illuminated when module detects a fatal error
-- MG Green Illuminated when there is no module fault, and flashes at 1 Hz rate when a
configuration error is detected
-- PWR Green Illuminated when 24 VDC is supplied on the L+ and M terminals of the module
Input STP Green Illuminated when the stop input is on
Input RPS Green Illuminated when the reference point switch input is on
Input ZP Green Illuminated when the zero pulse input is on
Input LMT-- Green Illuminated when the negative limit input is on
Input LMT + Green Illuminated when the positive limit input is on
Output P0 Green Illuminated when the P0 output is pulsing
Output P1 Green Illuminated when the P1 output is pulsing or when this output indicates positive
motion
Output DIS Green Illuminated when the DIS output is active
Output CLR Green Illuminated when the clear deviation counter output is active
Figure A-34 EM 253 Position Module