Model FL3102
27
7.0 Modbus Communications
Standard Model FL3102 Flame Detectors include a Single MODBUS
Communications Board 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 -
Comm 2 is utilized as a backup communications channel, therefore it is
not recommended to have both Comm 1 and Comm 2 channels active
simultaneously. If the dual Comm option is ordered, the Analog output will not be
available.
7.1 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.
7.2 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
Figure 32 Data Format