Annex A - Modbus Overview - Tyco FlameVision FV300 SERIES User Manual

ANNEX A - MODBUS OVERVIEW

The Modbus parameters are configured on the Network tab of the PC300 configuration tool.
Note: When Modbus is enabled or disabled or if the network parameters are changed
then the detector needs to be powered down and up or restarted from the
configuration tool to activate the new settings.
A1.4 SUPPORTED MODBUS FUNCTION CODES
The FV300 supports the following MODBUS Function Codes:
A1.4.1 FV300 REGISTERS
The FV300 has one block of 16 bit registers used for MODBUS access organised as
follows:
Offset Register
00
Commands
01
Reserved
02
Reserved
03
Reserved
04
Reserved
05
Reserved
06
Reserved
07
Reserved
08
Overall Status
4-20mA level
09
st
10
1 Cluster state
st
11
1 Cluster centre
st
12
1 Cluster size
nd
13
2 Cluster state
nd
14
2 Cluster centre
nd
15
2 Cluster size
rd
16
3 Cluster state
rd
17
3 Cluster centre
rd
18
3 Cluster size
th
19
4 Cluster state
th
20
4 Cluster centre
th
21
4 Cluster size
Code
03 Read Holding Registers
04 Read Input Registers
06 Write Single Register
16 Write Multiple Registers
4-20mA level x 1000
e.g. Alarm=17mA,Value=17000
0
X (0-255)
SX (0-255)
0
X (0-255)
SX (0-255)
0
X (0-255)
SX (0-255)
0
X (0-255)
SX (0-255)
Function
Data
See 1.4.2
See 1.4.3
CS
Y (0-255)
SY (0-255)
CS
Y (0-255)
SY (0-255)
CS
Y (0-255)
SY (0-255)
CS
Y (0-255)
SY (0-255)
Table. 6
Read/Write (R/W)
R/W
R
R
R
R
R
R
R
R
R
R
R
R
R
R
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