3. OIT Installation
It is necessary to follow all installation procedures described in this chapter for
electrical noise immunity and CE compliance.
Your Maple Systems OIT is designed to connect easily to your PLC. External
connectors provide quick connection for power and communications wiring.
• There is one serial port with an RJ-45 shielded jack. This port is used to connect
to the PLC and to configure the OIT.
• A separate three-position terminal block is supplied to provide power to the
OIT.
3.1. Create Custom Slide-In Legend
Please refer to the “Custom Keypad Slide-in Legends” section for details.
3.2. Prepare Panel for OIT Mounting
The OIT3185 and OIT4185 are mounted to a control panel from the front. For a
proper NEMA 4/12 seal, you will need:
• A panel with a maximum thickness of 0.125 inches (3.2 mm).
• A panel with a minimum thickness of 16-gauge (0.059 inches; 1.5 mm) steel or
10-gauge (0.102 inches; 2.6 mm) aluminum. Thinner panels may bow between
the mounting studs, requiring the use of a stiffener on the rear.
• The surface of the panel, where the panel comes into contact with the gasket,
must be free of scratches, pits, and other features that prevent the gasket from
sealing properly.
The diagram in Appendix D shows the dimensions of the panel cutout required for
proper installation. This panel cutout illustration is shown actual size and can be
photocopied to be used as a template. Check photocopy accuracy with the printed
check dimension. The panel cutout should be cleaned and deburred before the OIT
is installed.
3.3. Enclosures
Allow enough spacing within an enclosure for adequate ventilation. For some
applications, you may have to consider heat produced by other devices within a
panel. The ambient temperature around the terminal must be maintained as
specified.
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OIT3185A/4185A
1010-0104, REV 03
4. OIT Configuration Wiring
The OIT3185 and OIT4185 must be configured for a particular protocol before use.
The OITware-200 or STEPware-100 software (used on a computer with Windows
3.1 or later) is used for OIT configuration. For detailed instructions on installing
and using the software, please refer to the software documentation.
4.1. Connect OIT to PC for Configuration
To configure the OIT using Maple Systems’ configuration software, remove the
PLC/host cable from the serial port on the OIT and connect the OIT to the computer
using an RS-232 serial communications cable (P/N 7431-0096, purchased
separately from Maple Systems). The configuration cable should be connected to
the proper COM port on your computer, then attached to the serial port on the OIT.
See Figure 7 below for serial port pin assignments.
INSTALLATION MANUAL
15
1010-0104, REV 03
CTS
DSR
RTS
DCD
DTR
8
7
6
4
1
RXD
TXD
6
5
RJ-45
OIT
PC
4 Return
Ground 5
TXD 3
RXD 2
9S
1 TXD+
2 TXD-
3 CTS
7 RXD-
8 RXD+
N/C
N/C
N/C
N/C
N/C
9
N/C
Top
8
1
8
1
Pin Configuration
RJ-45 Plug
Printer
Com2
Back
of
OIT
7431-0096
Com1
OIT
PC
OIT Power Supply
Power
Maple Systems
OIT to PC cable
(If mouse is using
Com 1, use Com2)
Figure 7 OIT3185/4185 to PC RS-232 Communication
