Micromod Micro-DCI: 53MC5000 PLC AND PRINTER INTERFACES - Manual (Page 21)

2.3 RS-232/485 ITB CABLE CONNECTIONS
An RS-232/485 ITB can be connected to either the DDI-A channel (Process Control Station J5) or
the DDI-B channel (Process Control Station J9), but not both. As shown in Figure 2-2, the
DDI-A cable with 20 pin connectors is installed in J5 of the RS-232/485 ITB and J5 of the
53MC5000 Process Control Station. The DDI-B cable with modular connectors is installed in J4 of
the RS-232/485 ITB and J9 of the 53MC5000 Process Control Station.
2.4 ITB SIGNAL CONNECTIONS
An RS-232/485 ITB can be connected either from J1 to an RS-232 device or from TB2 to an RS-
485 device, but not both. The signal layout for J1, which has nine pins, is provided in a table in Fig-
ure 2-2. Although J1 is a standard nine pin RS-232 jack, a cable is not provided for this jack
because of the various device types that can be connected to it. The cable from J1 to the device
must therefore be fabricated. Illustrations of typical cables are provided in each of the PLC sec-
tions.
A signal layout for the five lugs of TB2 is also provided in a table in Figure 2-2. As shown in the il-
lustration, TB2 is dedicated to RS-485 devices. The RS-232/485 ITB transmits from the TB2 T+
and T- lugs, and receives at the R+ and R- lugs. The cable shield should be connected to the SH
lug of TB2.
2.5 RS-232/485 ITB POWER CONNECTIONS
Assigned power input terminals for the RS-232/485 ITB are illustrated in Figure 2-2. Input power
requirements for the RS-232/485 ITB are 12 to 26 V dc at 100 mA maximum. As shown in Figure
2-2, the positive power supply terminal is connected to the ITB TB1 +24 V lug and the negative
power supply terminal is connected to TB1 ground lug. The ITB power supply should not be con-
nected to other loads that may cause noise and signal degradation. All wiring is supplied by the
customer.
A Process Control Station can operate with +24 V dc input, with ac inputs of 110/120 V, or with ac
inputs of 220/240 V. Procedures to connect the controller to +24 V dc, 110/120 V ac, and
220/240 V ac, are provided in the Process Controller Station book which is given in the Preface of
this document.
WARNING
Instruments (e.g, Process Control Station) that are powered from an ac
line service constitute a potential electric shock hazard to the user.
Make certain that these system ac power lines are disconnected from
the operating branch circuit before attempting electrical connections.
Section 2. Installation
INSTALL
2-3