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User selectable options
Power supply
The DIL switches on the communication board
are used for selecting the operation modes of
the serial interfaces.
Serial interface 1:
Mode
S1.1
RS 232
OFF
Current loop
ON
Serial interface 2:
Mode
S1.3
S1.4
RS 485
ON
ON
Serial interface 4:
Mode
S3.1
RS 232
ON
Current loop
OFF
The SRIO 500M unit can be supplied from two
sources:
Supply 1: 80...265 V DC or
(device type SRIO 500M AA)
19...70 V DC
(device type SRIO 500M BA)
Supply 2: 80...265 V AC or DC
S1.2
OFF
ON
S1.5
S1.6
S1.7
OFF
OFF
OFF
S3.2
S3.3
S3.4
OFF
ON
OFF
OFF
OFF
ON
The supply voltages are connected to the screw
terminals 20...24 of the rear plate:
Screw terminal 20:
Screw terminal 21:
Screw terminal 22:
Screw terminal 23:
Screw terminal 24:
Note
RS 485 is active
S3.5
S3.6
S3.7
OFF
OFF
OFF
ON
OFF
OFF
|
DCD CTS
Short-circuited to DTR
supply 2 minus
supply 2 plus
shield ground
supply 1 minus
supply 1 plus
S3.8
OFF
OFF
|
11
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