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MTX-IND-V2 Industrial Featured GSM-GPRS terminal modem http://www.matrix.es
MTX-IND-V2 User Manual V.1.1
Page. 25
Subject to change without prior notice
RS-232
JPC2
-> JP 1-2 Open
-> JP 3-4 Open
-> JP 5-6 Close
-> JP 7-8 Close
JPC4
-> JP 1-2 Open
RS-485
open bus
JPC2
-> JP 1-2 Open (No Res)
-> JP 3-4 Open
-> JP 5-6 Open
-> JP 7-8 Open
JPC4
-> JP 1-2 Close
RS-485
Bus ended with 120 ohm resistor
JPC2
-> JP 1-2 Close (Res 120)
-> JP 3-4 Open
-> JP 5-6 Open
-> JP 7-8 Open
JPC4
-> JP 1-2 Close
RS-422
open bus
JPC2
-> JP 1-2 Open (No Res)
-> JP 3-4 Open (No Res)
-> JP 5-6 Close
-> JP 7-8 Open
JPC4
-> JP 1-2 Close
RS-422
Bus ended with 120 ohm resistor
JPC2
-> JP 1-2 Close (Res 120)
-> JP 3-4 Close (Res 120)
-> JP 5-6 Close
-> JP 7-8 Open
JPC4
-> JP 1-2 Close