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xiv Series 90-30/20/Micro Programmable Controllers Reference Manual–September 1998 GFK-0467K
SVCREQ #2: Read Window Values .....................................................................4-137
SVCREQ #3: Change Prog.Communications Window Mode & Timer Value......4-139
Example: .........................................................................................................4-140
SVCREQ #4: Change System Comm. Window Mode and Timer Value .............4-141
SVCREQ #6: Change/Read Number of Words to Checksum..............................4-143
To Read the Current Word Count:..................................................................4-143
To Set a New Word Count:.............................................................................4-143
Example: .........................................................................................................4-144
SVCREQ #7: Change/Read Time-of-Day Clock ..................................................4-145
Example: .........................................................................................................4-146
Parameter Block Contents...............................................................................4-147
To Change/Read Date and Time Using BCD Format:....................................4-147
To Change/Read Date and Time using Packed ASCII with Embedded Colons
Format.............................................................................................................4-148
SVCREQ #8: Reset Watchdog Timer ...................................................................4-149
Example: .........................................................................................................4-149
SVCREQ #9: Read Sweep Time from Beginning of Sweep.................................4-150
Example: .........................................................................................................4-150
SVCREQ #10: Read Folder Name ........................................................................4-151
Example: .........................................................................................................4-151
SVCREQ #11: Read PLC ID.................................................................................4-152
Example: .........................................................................................................4-152
SVCREQ #12: Read PLC Run State.....................................................................4-153
Example: .........................................................................................................4-153
SVCREQ #13: Shut Down (Stop) PLC.................................................................4-154
Example: .........................................................................................................4-154
SVCREQ #14: Clear Fault Tables ........................................................................4-155
Example: .........................................................................................................4-155
SVCREQ #15: Read Last-Logged Fault Table Entry............................................4-156
Example 1: ......................................................................................................4-157
Example 2: ......................................................................................................4-158
SVCREQ #16: Read Elapsed Time Clock ............................................................4-160
Example: .........................................................................................................4-160
SVCREQ #18: Read I/O Override Status..............................................................4-161
Example: .........................................................................................................4-161
SVCREQ #23: Read Master Checksum................................................................4-162
Example: .........................................................................................................4-162
SVCREQ #26/30: Interrogate I/O.........................................................................4-163
Example: .........................................................................................................4-163
SVCREQ #29: Read Elapsed Power Down Time.................................................4-164
Example: .........................................................................................................4-164
SVCREQ #46:Fast Backplane Status Access.........................................................4-165
Read Extra Status Data (Function #1).............................................................4-165
Write Data (Function #2)................................................................................4-167
Read/Write Data (Function #3).......................................................................4-168
Example 1: ......................................................................................................4-169
Example 2: ......................................................................................................4-170
PID..........................................................................................................................4-171
Parameters:......................................................................................................4-172
Valid Memory Types: .....................................................................................4-172