Models FL3100H/3101H
29
5.4.2 Modbus Write Response Message
Byte
Modbus
Range
Referenced to FL3100H /
FL3101H
1
st
Slave
Address 1-247*
(Decimal)
FL3100H / FL3101H ID (Address)
2
nd
Function Code
06
Preset Single Register
3
rd
Register
Address
Hi**
00
Not used by FL3100H / FL3101H
4
th
Register Address
Lo**
00-FF (Hex)
FL3100H / FL3101H Commands
5
th
Preset Data Hi
00-FF (Hex)
FL3100H / FL3101H Hi Byte
Command Data
6
th
Preset Data Lo
00-FF (Hex)
FL3100H / FL3101H Lo Byte
Command Data
7
th
CRC Lo
00-FF (Hex)
CRC Lo Byte
8
th
CRC Hi
00-FF (Hex)
CRC Hi Byte
Table 16: Modbus Write Response Message
NOTE*:
Address 0 is reserved for broadcast mode and is not supported at this time.
NOTE**:
Start Address can be a maximum of 247 Address Locations (0000-0x00F7).
5.4.3 Function Codes Supported
Function Code 03 or 04 (Read Holding Registers) is used to read status from the slave unit.
Function Code 06 (Preset Single Register) is used to write a command to the slave unit.
5.5 Exception Responses and Exception Codes
In a normal exchange, the master device sends a query to the FL3100H / FL3101H. The
FL3100H / FL3101H receives the query and returns a normal response to the master. If a
normal communications error occurs, there are 4 possible responses from the FL3100H /
FL3101H:
1. If the FL3100H / FL3101H does not recognize the query due to a communications
error, then no response is returned from the FL3100H / FL3101H and the master
device will eventually process a timeout condition for the query.
2. If the FL3100H / FL3101H receives the query, but detects a communication error
(CRC, etc.), then no response is returned from the FL3100H / FL3101H and the master
device will eventually process a timeout condition for the query.
Summary of Contents for FL3101H
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Page 22: ...Models FL3100H 3101H 15 Figure 14 P N 71072 Rear View Mounting Bracket Drawing ...
Page 70: ...63 Models FL3100H 3101H 10 7 Final Assembly Figure 24 P N 71450 FL3100H UV IR Final Assembly ...
Page 71: ...Models FL3100H 3101H 64 Figure 25 P N 71451 FL3101H UV Final Assembly ...