Micromod MOD: Modcell 2050R MODBUS Communications User Manual

Page 19

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IB-23C650M

RS-485 COMMUNICATIONS SETUP

Table 1. RS-485 Setup Menu

Middle

Display

Bottom

Display

Entry Description

SETUP

Steps 8.1 through 8.12.6.1.1allow setup for the
controller to be used as a computer
auto/manual (CAM) or supervisory station when
connected to a host device. No entries are
required if the instrument is to be used as a
stand alone controller which can receive
read/write commands from a host device.

TIMEOUT

XXXXX

X represents a time between 1 and 16383
seconds. The computer activity timeout
function is initialized and maintained by the
computer (host). If the time between sessions
of bus activity is greater than this value, a
Computer Fail is declared. This causes the
activity timer to be disabled, and the computer
status reverts to LOCKED. The controller
returns to local with parameters as defined in
Step 8.12.

MNEMONIC

XXX

Where X = any of the following characters:

Letters A through Z,
Any of the special characters:

b, c, super c, d, h, sub L, super L,
super m, super n, o, r, super T, u,
super V, w, <, >, =, +, –, *, #, /, %,
degrees (super o), or space,

Numbers 0 through 9.

Mnemonic appears in the control mode status
display when the activity timer is initialized by
the host and control mode is automatic.
Default mnemonic is CMP.

MNEMONIC

XXX

Where X = any of the characters listed in
Step 8.2
Mnemonic appears in the control mode status
display when the activity timer is initialized by
the host and control mode is manual.
Default mnemonic is MAN.

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