Bulletin No. 3020IM9503R6/98 Power Meter
December 1998 Appendix G—Modbus and Jbus Features Supported
1998 Square D All Rights Reserved 101
APPENDIX G—MODBUS AND JBUS FUNCTIONS SUPPORTED
Standard Modbus and Jbus functions supported by the power meter are listed
below.
3 Read Registers
4 Read Registers
6 Write Single Register
8 Diagnostic Codes:
10 Clear Counters and Diagnostic Registers
11 Returns the number of messages received with correct CRC.
12 Returns the number of messages received with CRC error.
13 Returns the number of exception replies sent.
14 Returns the number of messages sent to this unit.
15 Returns the number of broadcast messages received.
16 Returns slave NAK count.
17 Returns slave busy count.
18 Returns the number of characters received with error.
11 Fetch Communications Event Counter
16 Write multiple registers
17
Report slave identification number (modified; see explanation on next page)
22 Single register write with mask
23 Block register read/write
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