Acromag IP521-64 Series, User Manual

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SERIES IP521 INDUSTRIAL I/O PACK EIA/TIA-422B SERIAL COMMUNICATION MODULE
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FOR REMOVAL AND REPLACEMENT WHERE REQUIRED (SEE DRAWING 4501-714)
IP521 TERMINATION AND BIAS SIP RESISTOR LOCATION DRAWING
R28
R24
R25
1
1
1 1
1
1
R23
R26
R27
P1
IP521 PARTIAL VIEW
RESISTOR IDENTIFICATION
TxD-F TERMINATION
RxD-C TERMINATION TxD-C TERMINATION RxD-H TERMINATION TxD-H TERMINATION RxD-E TERMINATION
PORT
E
PORT F
PORT C PORT C PORT H PORT H
TxD-E TERMINATION
RxD-D TERMINATION
PORT E PORT D PORT D
TxD-D TERMINATION RxD-B TERMINATION
TxD-B TERMINATION
RxD-A TERMINATION
TxD-A TERMINATION
PORT B PORT B PORT A PORT A
PORT
FUNCTION
T E R M I N A T I O N + 5 V A N D G N D B I A S
TxD-F+ BIAS +5V
RxD-G TERMINATION TxD-G TERMINATION RxD-F TERMINATION
TxD-A+ BIAS +5V
PORT F
PORT A PORT G PORT G
PORT F
PORT B PORT C PORT G
TxD-B+ BIAS +5V TxD-C+ BIAS +5V TxD-G+ BIAS +5V
PORT D PORT H PORT E PORT A
PORT F
TxD-H+ BIAS +5V TxD-D+ BIAS +5V TxD-E+ BIAS +5V
TxD-A- BIAS GND TxD-F- BIAS GND
PIN 1 POSITION IS IDENTIFIED BY A DOT.
RESISTOR SIPS ARE MOUNTED IN SOCKETS AND CAN BE REMOVED IF REQUIRED.
2
R23, 24, 25, & 26
RESISTOR SIPS ARE DIVIDED AS SHOWN
1
P2
A
R25:A R25:B R25:C R25:D R24:D R26:A
SIP
R23:A R23:B R23:C R23:D R24:A R24:B R24:C
VALUE
120 OHM 120 OHM 120 OHM 120 OHM 120 OHM 120 OHM 120 OHM 120 OHM 120 OHM 120 OHM 120 OHM 120 OHM 120 OHM
D
B
C
R27:D R27:C
560 OHM 560 OHM 120 OHM 120 OHM 120 OHM
R27:B R27:A R26:D R26:C R26:B
560 OHM 560 OHM
R28:B R28:A R27:H
R27:G
R27:F R27:E
560 OHM 560 OHM 560 OHM 560 OHM 560 OHM 560 OHM
7 6 5 4 3 8
DETAIL "A"
MODULE IS SHIPPED WITH ALL SIP RESISTORS INSTALLED
R27, R28
1 6 5 4 9 8 7 3 2
E D C
F
G H
R28:E R28:F
R28:G
R28:H
B A
R28:C R28:D
560 OHM 560 OHM 560 OHM 560 OHM 560 OHM 560 OHM
PORT G PORT B
TxD-B- BIAS GND
TxD-G- BIAS GND
PORT C PORT H PORT D PORT E
TxD-C- BIAS GND TxD-H- BIAS GND TxD-D- BIAS GND
TxD-E- BIAS GND
4501-715A
NOTES CONCERNING RESISTOR PLACEMENT AND REMOVAL: 3. THE TxD AND RTS LINES SOURCED FROM A PORT CAN BE ENABLED VIA SOFTWARE. IF SO, THE NETWORK BIAS RESISTORS ASSOCIATED WITH EACH PAIR OF SIGNAL WIRES WILL NOT BE NEEDED. THESE RESISTORS ARE INSTALLED IN SOCKETS AND CAN BE REMOVED IF THESE DRIVERS ARE ALWAYS ENABLED.
1. ALL TRANSMITTING AND RECEIVING CHANNELS MAY HAVE TERMINATING RESISTORS (RT) AT BOTH ENDS OF THE NETWORK. THE IP521 HAS USER- REMOVEABLE PLUG-IN SIP TERMINATION RESISTORS (120 OHM).
2. THERE MUST BE AT MOST, ONE SET OF BIAS RESISTORS ASSOCIATED WITH EACH PAIR OF SIGNAL WIRES TO KEEP THE NETWORK FROM FLOATING WHEN NO UNITS ARE TRANSMITTING.