27
Models FL3100H/3101H
5.0 Modbus Interface
Standard FL3100H or FL3101H flame detectors include a single Modbus that is referenced as
Comm 1. A dual Modbus feature is optional, which includes two independent communications
channels referenced as Comm 1 and Comm 2.
NOTE:
If the dual Comm option is ordered, the analog output & HART will not be available.
5.1 Baud Rate
The Baud Rate is a selectable setting via the Modbus communications interface. The
selectable baud rates are 19.2K, 9600, 4800, or 2400 bits per second.
5.2 Data Format
The Data Format is a selectable setting via the Modbus communications interface. The
selectable data formats are as follows:
Data Bits
Parity
Stop Bit
Format
8 None 1 8-N-1
8
Even
1
8-E-1
8 Odd 1
8-O-1
8
None
2
8-N-2
Table 12: Data Format
5.3 Modbus Read Status Protocol (Query/Response)
5.3.1 Modbus Read Query Message
Byte
Modbus
Range
Referenced to FL3100H / FL3101H
1
st
Slave
Address
1-247 *
FL3100H / FL3101H ID (Address)
(X = 0 or 1 Model Type)
2
nd
Function
Code
03
Read Holding Registers
3
rd
Starting
Address Hi**
00
Not Used by FL3100H / FL3101H
4
th
Starting
Address Lo**
00-FF (Hex)
FL3100H / FL3101H Commands
5
th
No.
of
Registers Hi
00
Not Used by FL3100H / FL3101H
6
th
No. of
Registers Lo
01
No. of 16 Bit Registers
7
th
CRC Lo
00-FF (Hex)
CRC Lo Byte
8
th
CRC Hi
00-FF (Hex)
CRC Hi Byte
Table 13: Modbus Query Messages
NOTE
*
:
Address 0 is reserved for broadcast mode and will not be supported at this time.
Содержание FL3101H
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Страница 22: ...Models FL3100H 3101H 15 Figure 14 P N 71072 Rear View Mounting Bracket Drawing ...
Страница 24: ...17 Models FL3100H 3101H Figure 17 FL3100H FL3101H Field Terminations Figure 18 Detector Housing and Base ...
Страница 70: ...63 Models FL3100H 3101H 10 7 Final Assembly Figure 24 P N 71450 FL3100H UV IR Final Assembly ...
Страница 71: ...Models FL3100H 3101H 64 Figure 25 P N 71451 FL3101H UV Final Assembly ...