S4000C
NOTE:
The Alarm relay set point cannot be set lower than the Warning Relay set point, or
higher than 60% LEL.
4.4.5 MODBUS Channel 1 Settings
To change the MODBUS Channel 1 settings of the Model S4000C, apply the magnet to the GM
Logo on the cover of the unit until “
SE
” is displayed, then remove the magnet. This puts the unit
into Setup Mode. After a few seconds “
CH1
” will be displayed. Apply and remove the magnet to
change the MODBUS Channel 1 settings.
First, the current Baud Rate MODBUS Channel 1 is displayed. If another baud rate is to be
selected, apply and remove the magnet until the desired baud rate is displayed. The choices
are: 19.2k baud “
19.2
”, 9600 baud “
96
”, 4800 baud “
48
”, or 2400 baud “
24
”.
After a few seconds, the current Data Format for MODBUS Channel 1 is displayed. If another
data format is to be selected, apply and remove the magnet until the desired data format is
displayed. The choices are: 8-N-1 “
8n1
”, 8-N-2 “
8n2
”, 8-E-1 “
8E1
”, or 8-O-1 “
8O1
”.
After a few seconds, the current address for MODBUS Channel 1 is displayed. Apply and
remove the magnet until the desired address is displayed. Once the desired address is
displayed, wait 3 seconds and “
Fi
” will be displayed. Apply and remove the magnet to return to
the next level of the Setup menu. When “
Fi
” is displayed again, apply and remove the magnet
to return to normal operation.
Default settings for Channel 1 are: address 1, 19.2k baud, 8-N-1.
NOTE:
The address can be adjusted from 1 - 247. Channel 1 and Channel 2 addresses may
be the same.
4.4.6 MODBUS Channel 2 Settings
To change the MODBUS Channel 2 Settings of the Model S4000C, apply the magnet to the
GM Logo on the cover of the unit until “
SE
” is displayed, then remove the magnet. This puts the
unit into Setup Mode. After a few seconds “
CH2
” will be displayed. Apply and remove the
magnet to change the MODBUS Channel 2 settings.
First, the current Baud Rate MODBUS Channel 2 is displayed. If another baud rate is to be
selected, apply and remove the magnet until the desired baud rate is displayed. The choices
are: 19.2 kbaud “
19.2
”, 9600 baud “
96
”, 4800 baud “
48
”, or 2400 baud “
24
”.
After a few seconds, the current Data Format for MODBUS Channel 2 is displayed. If another
data format is to be selected, apply and remove the magnet until the desired data format is
displayed. The choices are: 8-N-1 “
8n1
”, 8-N-2 “
8n2
”, 8-E-1 “
8E1
”, or 8-O-1 “
8O1
”.
After a few seconds, the current address for MODBUS Channel 2 is displayed. Apply and
remove the magnet until the desired address is displayed. Once the desired address is
displayed, wait 3 seconds and “
Fi
” will be displayed. Apply and remove the magnet to return to
the next level of the Setup menu. When “
Fi
” is displayed again, apply and remove the magnet
to return to normal operation.
Default settings for Channel 2 are: address 2, 19.2 kbaud, 8-N-1.
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