ES ENIP-2-32 Series, Manual

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Appendix B. ENIP-2: Modbus
ENIP-2, manual, ENIP.411187.002. Rev. 11.2020
66
Appendix B. ENIP-2: Modbus
About Modbus
Modbus (Schneider Electric trademark) is a serial communication protocol. Full descrip-
tion see on
www.modbus.org . This protocol is used for data communication via RS-485
or Ethernet interfaces.
А ddress
Available slave addresses of ENIP-2 are from 01 to 254 (01-hFE). h00 and hFF are mul-
ticast addresses. Any device in network responds to the request
if it’s address is h00. Any
device in network executes a command if the request address is hFF.
Available function codes
h01 read coil;
h02 read discrete inputs;
h03 read holding registers;
h04 read input registers;
h05 write single coil;
h06 write single register (reset, fixing data, delete event log);
h14 read file record;
h2B read ID.
Service function codes
h64 service read;
h65 service write.
Exception codes
01 – illegal function
02 – illegal data address
03 – illegal data value
04 – slave device failure
Analog registers