GE Industrial Solutions A Series Lighting Control Panelboards Modbus Register Map - Manual (Page 16)

A Series ® Lighting Controller Modbus Register Map
Physical Input Registers-Multistate Inputs (MI)
10
Read MI Reg15 to Reg18
Table 13 shows the result of a request to
read MI Reg15 to Reg18 (Function 4,
MI115–MI116 and MI201–MI202 in map).
Request Response
Field Name Hex Field Name Hex
Device Address 01 Device Address 01
Function 04 Function 04
Register Address
Hi 00 Byte Count 08
Register Address
Lo 0E Input 115 Hi 00
Quantity of Input
Reg. Hi 00 Input 115 Lo 01
Quantity of Input
Reg. Lo 04 Input 116 Hi 00
Packet CRC Hi Input 116 Lo 02
Packet CRC Lo Input 201 Hi 00
Input 201 Lo 01
Input 202 Hi 00
Input 202 Lo 03
Packet CRC Hi
Packet CRC Lo
Table 13. Sample packet for read of MI Reg15 to Reg18.
Write to MI Reg15
Table 14 shows the result of a write to MI
Reg15 (Function 5 Single Write, MI115 in
map). Note that the packet shows an error,
since MI values are read only.
Request Response
Field Name He
x
Field Name Hex
Device Address 01 Device
Address
01
Function 05 Error Code 85
Register Address Hi 00 Exception
Code
85
Register Address Lo 0E Packet CRC
Hi
Quantity of Input Reg.
Hi 00 Packet CRC
Lo
Quantity of Input Reg.
Lo 01
Packet CRC Hi
Packet CRC Lo
Table 14. Sample packet for write of MI Reg15.