gefran GFX4-IR Configuration And Programming Manual page 9

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.
GFX4-IRs 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).
GFX4-IRs have a ModBus serial (Serial 1) and optional Fieldbus (Serial 2) serial (see order code) with one of the
following protocols: ModBus, Profibus, CANopen, DeviceNet, Ethernet.
The following procedures are indispensable for the Modbus protocol.
For the remaining protocols, see the specific Geflex Profibus, Geflex CANopen, Geflex DeviceNet and Geflex Ethernet manuals.
GFX4-IR modules have the following default settings:
- node address = 0 (0 + 0)
- 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 GFX4-IR modules in a serial network, with node address selectable from "01" to "99" in stan-
dard mode, or create a mixed GFX4-IR/ GFX4 / Geflex network in Geflex compatible mode in which each GFX4-IR or GFX4
identifies 4 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
- (A + 0) = Autonode Serial 1 for Geflex slaves connected to GFX4-IR.
46
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45
baV
626
bav. 2
47
par
627
par. 2
Communication error
If Modbus communication between GFX4-IR 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
80415F_MSW_GFX4-IR_05-2019_ENG
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Instrument 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
R/W Timeout for communication 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 Odd
2 Even
0 ... 121 sec. Value 0 disables the function
Mode table for communication error
0 Delivered power is not changed
1 La potenza erogata viene forzata al valore C.E.P
+16 only for C.E.M -1 in MANUAL_POWER at the restart of the
communication (only if in manual mode)
-100.0...100.0%
4
4
0
0
0
0
0,0
9