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Installation of the "MODBUS" serial network
A network typically has a Master that "manages" communication by means of "commands" and Slaves that interpret these
commands.
GFW are considered Slaves to the network master, which is usually a supervision terminal or a PLC.
They are positively identified by means of a node address (ID) set on the rotary switches (tens + ones).
GFW have a ModBus serial (Serial 1) and optional Fieldbus (Serial 2) serial (see order code) with one of the following protocols:
ModBus, Profibus, CANopen, Ethernet, EtherCAT and EthernetIP.
The following procedures are indispensable for the Modbus protocol.
For the remaining protocols, see the specific Geflex Profibus, Geflex CANopen, Geflex Ethernet, GFX4-EtherCAT and GFX4-ETH1 manuals.
GFW modules have the following default settings:
- node address
- speed Serial 1 = 19200 bit/s
- parity Serial 1 = none
- speed Serial 2 = 19200 bit/s
- parity Serial 2 = none
You can install a maximum of 99 GFW modules in a serial network, with node address selectable from "01" to "99" in standard mode, or create
a mixed GFW / GFX4 network in GFX compatible mode in which each GFW identifies 3 zones with sequential node address starting from the
code set on the rotary switches.
In short, the valid rotary switch settings (tens + ones) are:
- (0 +0) = Autobaud Serial 1
- (B +0) = Autobaud Serial 2
46
(od
45
baV
626
bav.2
47
par
627
par2
If Modbus communication between GFW and Master node goes into timeout (settable in C.E.t parameter), you can force an output
power value (C.E.P parameter of each zone) and transmit the alarm state to a relay output (rL.x parameters).
890
[.E.T
891*
[.E. m
892*
[.E.P
80997D_MSW_GFW_400-600_04-2021_ENG
= 0 (0 + 0)
R
Device identification code
R/W
Select Baudrate - Serial 1
R/W
Select Baudrate - Serial 2
R/W
Select parity - Serial 1
R/W
Select parity - Serial 2
Timeout for communication
R/W
error
R/W
Mode for communication error
Output power when
R/W
communication error is active
1...99
Baudrate table
0
1200 bit/s
1
2400 bit/s
2
4800 bit/s
3
9600 bit/s
4
19200 bit/s
5
38400 bit/s
6
57600 bit/s
7
115200 bit/s
Parity table
0
No parity
1
2
0 ... 121
Value 0 disables the function
sec.
Mode table for communication error
Delivered power is not
0
changed
Delivered power is forced to
1
C.E.P value
0.0...100.0%
Odd
Eeven
0
0
Zone 1
Zone 2
0.0
0.0
Zone 1
Zone 2
4
4
0
0
0
0
Zone 3
0.0
Zone 3
9
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