Micromod Micro-DCI: 53HC2600 LoopMaster SL6000 CONFIGURATION TOOLKIT - Manual (Page 39)

53HC2600 INSTRUCTION MANUAL
Online Configurations 31
4.0 ONLINE CONFIGURATIONS
4.1 LoopMaster Online
Before LoopMaster can be operated online, you must make a physical communications connection
between the personal computer and a controller or controller network. The simplest communications con-
nection for a single Micro-Mite controller is to cable a personal computer COM port to the RS-232 module
on the back of the controller.
Cabling a personal computer to a network of Micro-Mite controllers requires a personal computer COM
cable, controllers with RS-485 modules, an RS-232/485 Interconnection Terminal Board (ITB), four wire
twisted pair shielded controller interconnecting cables, and a Communications ITB. This section provides
the procedures to make these connections, as well as operating procedures to start an online configura-
tion, to upload a configuration from a Micro-Mite controller, and to download a configuration file to a
Micro-Mite controller.
4.2 Connecting A Micro-Mite Controller To Your PC
Your personal computer communicates to a Micro-Mite controller through one of its COM ports. In order to
communicate, both the personal computer and the Micro-Mite controller must have identical communica-
tion settings. This means the baud rate and parity must be the same in the controller and the personal
computer (e.g., 9600 baud, even parity).
LoopMaster stores the communication settings in the LOOPMSTR.INI file. The Micro-Mite controller
stores its communication settings in the conF-SYS menu. As shown in
Figure 4-1 , the communications
cable (698B239U01) is connected from the personal computer to the RS-232 module of the Micro-Mite
controller. Included in the illustration is a cable drawing that can be used to fabricate your own cable, if
necessary. Maximum cable length should not exceed 50 feet (15.2 meters).
4.3 Multi-Drop Network Connections
Your personal computer communicates to an addressed Micro-Mite controller on a Datalink through one of
its COM ports via an RS-232/485 ITB. As shown in
Figure 4-2 , the personal computer COM port is con-
nected to the ITB J1 with cable 698B240U01. The ITB acts as an RS-232/RS485 (422) signal converter.
The signals are daisy-chained to each controller with four wire twisted pair shielded cables (24 AWG mini-
mum, Belden number 9842 or equivalent).
Maximum end-to-end distance of all cabling lengths for 28.8 Kb communications is 4000 feet (1219
meters). The network is terminated with the Communications ITB. An RS-232/485 ITB cable drawing is
provided as
Figure 4-3 should it be necessary to fabricate your own cable.
The maximum allowable number of controllers on the network is 32 (0-31). All network communications
queries are initiated by the personal computer. Micro-Mite controllers on the Datalink do not initiate a ses-
sion or communicate with each other.