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8.4.- CONFIGURATION TABLES for BITS, PARITY AND SIGNAL INPUT
R S T
R S T
Jumper closed =
Jumper opened =
SIGNAL INPUT CONFIGURATION
A B C D E F G H I J
K L M N O
K L M N O
A = Loop internally powered
B = Loop externally powered
BITS AND PARITY CONFIGURATION
Signal Input
Jumpers position in
Signal Input Connector
Type
Selector S1
Selector S2
Pin 1
Pin 2
Pin 3
RS-232 ±15 V
Input
+5 V
GND
RS-485
RS-422
Signal B
Signal A
GND
Internal Load
RS-485
RS-422
Signal B
Signal A
GND
External Load
RS-423 ±5 V
Input
+5 V
GND
Loop -
Loop +
not used
A
Loop Powered
2 mA
Loop +
not used
Loop -
B
Loop -
Loop +
not used
A
Loop Powered
20 mA
Loop +
not used
Loop -
B
TTL Level
+5 V
Input
GND
Jumpers position in
Bits
Parity
Selector S3
7
Odd
7
Even
7
Ignored
Jumpers position in
Bits
Parity
Selector S3
8
Odd
8
Even
8
Ignored
8
None
8.5.- LEVEL LOGIC CONFIGURATION
Level logic for Signal Input configured as 2 mA, 20 mA, RS-423 or RS 232 can
be inverted placing the jumpers K and L as shown