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Micromod MOD: Modcell 2050R MODBUS Communications User Manual

Page 25

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IB-23C650M

RS-485 COMMUNICATIONS SETUP

Table 1. RS-485 Setup Menu

Middle

Display

Bottom

Display

Entry Description

CTL MODE

LAST

MANUAL

AUTO

=

controller maintains the same control mode

after a communications failure has been
detected.
=controller operates in manual following a
computer failure with the output as defined in
Step 8.12.1.1.
=controller operates in automatic following a
computer failure with the set-point as defined in
Step 8.12.6.1.1.

OUTPUT

LAST

NEW VALU

=control output holds at the output value prior
to the computer failure.
=control output set to value set in Step
8.12.1.1.1.
Note: This new value is used only if the
controller mode in Step 8.12.1 is manual (MAN)
and a computer failure is detected.

OUT VAL

XXX

Where X = any value between 0 and 100%.
This is the output of the controller if a computer
failure is detected and the controller is in
manual.

OUTPUT 2

LAST

NEW VALU

=

output 2 holds at the same value prior to the

computer failure.
=output set to value set in Step 8.12.2.1.
Note: This new value is used only if the
retransmission variable in the "MA OUTP
MENU" has been selected as manual or
computer only, and if a computer failure is
detected (see Table 4 in IB-23C650 for more
information).

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