Parker ACR1200, Hardware Manual

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ACR1200 Hardware Manual
P/N PM08123
ACR1200 MOTHERBOARD JUMPERS
RS-422/485 Configuration Jumpers, continued
These jumpers selections show some of the standard interface configurations for the
RS-422/RS-485 output control. Refer to the following figure for a schematic of the
RS-422/RS-485 interface.
Standard RS-422/485 Interface Jumpers Examples
Interface Function COM1 Jumpers COM2 Jumpers
RS-422 Full Duplex:
Drivers and Receivers are enabled
at all times.
4-Wire Interface.
JP1-1 to JP1-2
JP1-3 to JP1-4
JP16 Out
JP17 Out
JP2-1 to JP2-2
JP2-3 to JP2-4
JP18 Out
JP19 Out
RS-485 Half Duplex:
Drivers and Receivers are enabled
and disabled by the user via
COM1/COM2 RXD/TXD
Transmit Enable flags.
2-Wire Interface.
JP1-1 to JP1-2
JP1-3 to JP1-4
JP16 In
JP17 In
JP2-1 to JP2-2
JP2-3 to JP2-4
JP18 In
JP19 In
Table 2.8 ACR1200 RS-422/485 Configuration Jumpers
Refer to Figure 1 for jumper location.
TXD always enabled
Not Used
Not Used
COM1 (COM2) JUMPERS SHOWN
RS-422/RS-485 INTERFACE SCHEMATIC
+5V
TXDxA
P5
JP1
(JP2)
JP16
(JP18)
JP17
(JP19)
RXDxA
TXDxB
RXDxB
Where x is:
1: COM1
2: COM2
GND RXD always enabled
Enable TXD with Transmit Enable Flag
Enable RXD with Receive Enable Flag
1
2
1
2
1
3
5
7
9
11
2
4
6
8
10
12
Figure 4. ACR1200 RS-422/RS-485 Interface Schematic