Autobaud" Sequence; Autonode" Sequence - gefran GEFLEX GFX-M1 Series Operating Instructions And Warnings

Adjust the serial communication speed and parity of the Geflex
models to the supervision terminal or PLC.
If network speed is 19200 baud and there is no parity, go
directly to the "AUTONODE" sequence.
The green "STATUS" LED L1 mentioned in the pro-
cedure can vary its behavior based on parameter
Ld.St , which has a default setting of 16.
The red LED not mentioned in the procedure can
vary its behavior based on the presence of an error
on the main input.
1) Cut power to the Geflex modules.
2) Connect the serial cables to all of the Master modules
(GFX-M1...) in the network and to the supervision terminal.
3) Set the rotary selector on the Geflex modules to be installed
(or on all the module in case of a first installation) to "0".
4) Turn on power to the electrical pane.
Each GEFLEX module has to be assigned an unequivocal
node address in the serial network.
If the entire network was previously initialized and you want to
add a new module to the network, go directly to the "CHANGE"
sequence. The node address is assigned by means of the rota-
ry selector on each module.
Geflex Master modules can assume tens values only 1 = 10, 2
= 20, ... 9 = 90.
(ex. Geflex Master rotary selector = 2, node address = 20)
Geflex Slave modules can assume only the values that are the
sum of their own rotary selector (representing units) plus the
tens set on the connected master.
(ex. Geflex Master rotary selector = 2, node address = 20;
Geflex Slave rotary selector = 3, node address = 20+3= 23).
The green "STATUS" LED L1 mentioned in the pro-
cedure can vary its behavior based on parameter
Ld.St , which has a default setting of 16.
The red LED not mentioned in the procedure can
vary its behavior based on the presence of an error
on the main input.
1) Cut power to the Geflex modules.
2) Set the rotary selector on the Slave modules (GFX-S1...) in
progression from "1" to "9".
3) The rotary selector on the Master modules (GFX-M1..) must
be set from "1" to "9".
4) Energize the electrical panel, check that the green "STA-
TUS" LEDs flash at a frequency of 2Hz. (If parameter 197 Ld.St
= 16 as default). In this step, each module has acquired the
status of its rotary selector.
5) Cut power to the Geflex modules.
80331F_MHW_GFX-25/120A_05-2014_ENG

4.1 "AUTOBAUD" sequence

5) Check that the green "STATUS" LEDs are flashing at high
frequency (10Hz).
6) The supervision terminal has to transmit a series of generic
"MODBUS" read messages to the network.
7) The procedure is finished when all of the green "STATUS"
LEDs L1 on the Geflex modules flash at a normal frequency
(2 Hz). (If parameter 197 Ld.St = 16 as default.).
The new speed parameter is saved permanently in each
Geflex, so you will not have to activate the "AUTOBAUD"
sequence at future power-ups.

4.2 "AUTONODE" sequence

6) Disconnect the serial cable from each Geflex Master.
7) Turn the rotary selector of the Master module to position "A".
8) Energize the electrical panel.
9) Check that the green "STATUS" LED on the Master module
flash at a frequency of about 5Hz.
10) The procedure is finished when the green "STATUS" LED
and red "ERR" LED flash at a frequency of about 2Hz.
11) Turn the power off.
12) Connect the serial cable to each Geflex Master.
13) Return the rotary selector on the Master module to the
position assigned at point 3.
The new node address parameter is saved permanently in
each Geflex, so you will not have to activate the "AUTONODE"
sequence at future power-ups.
Steps 1 and 4 are necessary only for Geflexes with
firmware 1.0x. In later versions, when the rotary
selector is moved, the green "STATUS" LED remains
on steadily for about 6 seconds, after which it resu-
mes its normal operation, saving the address.
Steps 1, 4, 5, 8 and 11 are necessary only for
Geflexes with firmware 1.0x. In later versions, when
the rotary selector is moved, the green "STATUS"
LED remains on steadily for about 6 seconds, after
which it resumes its normal operation, saving the
address.
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