ComAp InteliLite 4 AMF 20, Global Manual

Page: 194 / 620

InteliLite4 AMF20 Global Guide
194
Reading binary inputs as coil status.
Table: Binaries
Allowed Modbus functions: 01, 02
Addresses
Modbus Addr.
Prot. Addr.
Source
= Value
= State
C.O.#
State #
Name of
Value
Name of State
Bit #
Bit Name
Activated by protection
(s):
Group
00000 Value 8235 Binary Inputs 1 GCB Feedback Controller I/O
00001 Value 8235 Binary Inputs 2 MCB Feedback Controller I/O
00002 Value 8235 Binary Inputs 3 Emergency Stop Controller I/O
We will read state of MCB Feedback binary input.
Request: (Numbers in Hex)
01 01 00 01 00 01 AC 0A
Controller address Modbus function
Register address
0001
hex
=
0001
dec
Number of registers CRC
Response: (Numbers in Hex)
01 01 01 01 90 48
Controller address Modbus function
Length of data
01
hex
= 1 byte read
Data
01
hex
= active
CRC
The read data is 01. This means this binary input is active.
Note: You can use Modbus function 2 instead of 1, the rest of the data remains the same (CRC differs).