Chapter 4 Data Communications Interface; Available Communications Protocol Selection And Wire Spec; Multiload Ii/ Rcu Ii Explosion Proof Lite (Exl) Installation Guide - Part - Toptech MultiLoad II EXL Installation Manual

CHAPTER 4– DATA COMMUNICATIONS INTERFACE

Chapter 4 Data Communications Interface

The MultiLoad II/ RCU II has four (4) communications ports (see Figure3.3), each with a specific
purpose. The following section provides the information required to select and make the wiring
connections to the ports:
Communication
Port
Comm. Port 0 RS-485
Comm. Port 1 RS-232 or RS-485
Comm. Port 2 RS-232 or RS-485 (2 wire)
Ethernet 10/100Mbps
If a service loop is used, the maximum wire length in the service loop should not exceed 3
inches [75mm].
Separate AC and DC wiring by at least 3 inches [75mm]. Do not allow excess wire in the
service loop to overhang printed circuit board.
Default settings in MultiLoad are: COM O – FCM ; COM 1- HOST , and COM2 – NA.See
the user guide for more details.
Only one port may be defined as an FCM, Print or Alibi Log, otherwise, a 'Port Usage
Conflict(s)' message will display upon re-boot. See the user guide for more details.

Available Communications Protocol Selection and Wire Spec

This section describes the available communication protocols for MultiLoadII/RCU II.
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MultiLoad II/ RCU II Explosion Proof Lite (EXL) Installation Guide - Part # 6070

Interface Type Typical Function
Internal I/O board /
FCM I / FCM II / PCM
Communication
Host Communication (TMS) /
Printer
Ticket Printer/Data Logger
Host Communication (TMS)
4
Chapter
Terminal (Figure 3.3)
TB2
TB3 RS-232
TB4 RS-485
TB5
J3
Cat 5 (or higher) cable