Commissioning and testing MATRIX Control Panel OP71
22 PR-2009-0021-GB • Subject to modifications • R5-04/2016
6 Commissioning and testing
6.1 Factory settings
The MATRIX control panel OP71 is preset as follows. The bus termination on the
MATRIX control panel OP71 can be changed as required using the relevant switches:
6.2 MATRIX.Net termination setting
If the MATRIX control panel OP71 is included as
the first or last unit (node) in the MATRIX.Net, then
the terminating resistors must be switched on.
• Adjust the terminating resistor on the first and
last unit of the network as illustrated in the figu-
re.
Bus terminating resistor Both DIP switches: closed (ON)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
DIP switch S1 Function
OFF OFF Terminating resistor
switched off
ON ON Terminating resistor
switched on
(default setting)
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