Specifications

74
Schneider Electric
The Modbus Protocol (continued)
Identification of a slave: function 17 (specific to PM 6xx/
CM2xxx).
b Query.
b Response.
Note: The number of bytes, slave ID and data available depend on the type of slave.
For the ON/OFF indicator: FF = ON & 00 = OFF.
Example: Read the data of a PM600 N°17:
b Query.
b Response.
64 = specific to Powerlogic modules.
01 E1 = Powerlogic addresses.
Returns the description of the type of
controller at this address, the status of the
"run indicator" and information specific to
each type of slave. Broadcast not
supported.
E52392E52393E52394E52395
Slave no. 11 CRC 16
1 byte 1 byte 2 bytes
Slave no.
11
Number
of bytes
Slave ID
ON/OFF
indicator
MSB of
data
LSB of
data
CRC
1 b
y
te 1 b
y
te
1 byte 1 byte1 byte 1 byte
1 byte
2 bytes
01 11 CRC 16
1 octet 1 octet 2 octets
01
11
04
64
FF
01
E1
CRC 16
Guide to Integration
Modbus / Jbus