3.2. Connect OIT3250 to PC for Configuration
To configure the OIT3250 using Maple Systems’ configuration software, a second
serial port (Port 2) is provided which allows you to connect a computer while using
the first port (Port 1) to connect to the PLC/host. Connect the OIT to the computer
using an RS-232 serial communications cable (P/N 7431-0049, purchased
separately from Maple Systems). The configuration cable should be connected to
the proper COM port on your computer, then attached to Port 2 (the serial port
farthest away from the power connector) on the OIT3250. See Figure 10 below for
Port 2 pin assignments.
NOTE:
Be particularly careful during wiring that Pins 8 and 9 on Port 2 are left
open. Otherwise, damage to the OIT’s circuitry could occur (see Figure 11 below).
14
OIT3200/3250
1010-0081A, REV 04
Printer
Com2
Back
of
OIT
7431-0049
Com1
- +
OIT
Port 1
GND
PC
OIT Power Supply
7431-0050A
Power
Maple Systems
OIT to PC cable
(If mouse is using
Com 1, use Com2)
Port 2
Figure 11 Port 1 OIT3200 to PC RS-232 Communication
CTS
DSR
RTS
DCD
DTR
8
7
6
4
1
RXD
TXD
2
3
9P
OIT
PC
5 Return
Ground 5
TXD 3
RXD 2
9S
1 N/C
4 N/C
6 N/C
7 N/C
8 Ext. Alarm
N/C
N/C
N/C
N/C
N/C
PORT 2
9
9 Ext. Keypress
N/C
N/C
