Super Systems AC20 RS485 Modbus User Manual

Page 28

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TITLE: MODBUS/J-BUS Protocol for SSi’s- AC20 ENG. 824E REV. 1

WORDS FOR DEVICE IN CONTROL MODE - NON PARAMETERS

ADDRESS

(decimal)

DEC.

Display

R

W

R

JBus

Mod

Bus

DESCRIPTION

FIGU-

RES

MNEM

CODE

E
A
D

I

T
E

131

130

Main control output value

1

x

x

132

131

Secondary control output value

1

x

x

133

132

Pid out value

1

x

x

134

133

Main control output display value

See Mbus

word 301

(ñ.xxx)

x

135

134

Secondary control output display value

See Mbus

word 302

(S.xxx)

x

136

135

Device status mode

Range:

0 = Control mode
1 = Control mode with error E.130
2 = Control mode with error E.140
3 = Burn-off procedure in progress
4 = Purge procedure in progress
5 = Probe test procedure in progress
6 = Configuration mode
7 = Security code mode

Note:

For E.130/E.140 errors, see Technical
specifications Eng. 247E
The error is reset when read if device is in
remote state

N.A.

x

137

136

Type of operative set point

Range:

0 = The set point utilized is a value set by

serial link (“Operative Set Point
Value”)

1 = Main set point
2 = Auxiliary set point 2
3 = Auxiliary set point 3
4 = Auxiliary set point 4

N.A.

x

138

137

Operative set point value

Note:

It is utilized by the device for the PID as
well as for the SMART algorithms.
Any change will not be influenced by the
gradient mechanism. This set point value
is not going to be stored in Earom and it
will be lost at power down.

See Mbus

word 300

x

x

301

300

Decimal number relative to primary
control variable

N.A.

x

302

301

Decimal number relative to main control
output in engineering units

N.A.

x

303

302

Decimal number relative to secondary
control output in engineering units

N.A.

x

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