1747-UM001A-US-P - March 2000
7-2
Using the Open Controller
Using the Serial Ports
Both open controller CPU modules have two serial ports that are electrically
isolated from the backplane but share a common isolated ground (Figure
7.2).
COM1 and COM2 are configurable through the DOS
mode
command
(
mode com
n b
) for 110, 150, 300, 600, 1200, 2400, 4800, 9600, 19200 bit/
sec. For example, at the DOS prompt, enter:
MODE COM2 48
to specify
4800 baud rate.
Figure 7.2
Connecting to the serial ports
In RS-422, the TXD lines are enabled when RTS is enabled. When RTS is
disabled, the TXD lines go to tristate (offline).
COM1 supports RS-232 only.
COM2 supports RS-232, RS-422, and RS-485. You set a jumper on the
open controller CPU to select the COM2 mode of operation (Figure 7.3).
The jumper location and settings are the same for both open controllers.
STATUS
BATT
COM 1
LED 1
LED 2
LED 3
LED 4
COM 2
OC 586 CPU
STATUS
BATT
COM 1
LED 1
LED 2
LED 3
LED 4
COM 2
OC 266 PENTIUM CPU
2 serial ports
Use 9-pin, D-shell adapter
cable 1747-OCS92
See table for maximum
cable lengths
Maximum lengths for serial cables
For:
Maximum cable length is:
RS-232
50 ft (15.24 m)
RS-422
4000 ft (1219.20 m)
RS-485
4000 ft (1219.20 m)
Pin assignments
Pin
RS-232
RS-422
(COM2 only)
RS-485
(COM2 only)
1
DCD
422 TXD+
TRXD
2
RXD
422 RXD+
3
TXD
4
DTR
5
common
common
common
6
DSR
422 RXD–
7
RTS
8
CTS
422 TXD–
TRXD
9
N/C
N/C
N/C
1747-OCE
1747-OCF
Содержание 1747-OC Series
Страница 1: ...1747 OC Series Open Controllers 1747 OCE OCF User Manual Allen Bradley HMIs...
Страница 4: ......
Страница 6: ...1747 UM001A US P March 2000 SOC 2 Summary of Changes Notes...
Страница 12: ...Publication 1747 UM001A US P March 2000 toc iv Table of Contents...
Страница 22: ...1747 UM001A US P March 2000 1 10 Introducing the Open Controller Notes...
Страница 30: ...1747 UM001A US P March 2000 2 8 Installing the Open Controller CPU Module Notes...
Страница 46: ...1747 UM001A US P March 2000 3 16 Modifying BIOS Settings Notes...
Страница 66: ...1747 UM001A US P March 2000 5 10 Defining System Settings Notes...
Страница 86: ...1747 UM001A US P March 2000 6 20 Installing Software Notes...
Страница 98: ...1747 UM001A US P March 2000 8 4 Troubleshooting Notes...
Страница 114: ...1747 UM001A US P March 2000 B 8 Loading Windows NT on your 1747 OCF Open Controller Notes...
Страница 118: ...1747 UM001A US P March 2000 C 4 Handling the 1747 BA Battery Notes...
Страница 125: ...Allen Bradley HMIs...