Ampcontrol Gasguard 2 - IMAC Communications; GG2 Detector Removal; IMAC Registers

Ampcontrol Pty Ltd – ABN 28 000 915 542
GG2 COMMUNICATIONS USER MANUAL
GG2B032 Version 1 – JULY/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 9 of 22
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– PROPERTY OF AMPCONTROL PTY LTD
– NOT TO
BE REPRODUCED IN PART
4 IMAC COMMUNICATIONS
4.1 GG2 Detector Removal
If iMAC is activated and the detector is removed, all bit fields will go to all zeros and all numerical values
will go to 0xFFFF. The setpoint flag bits and data invalid bit will go high (1) and are exceptions to the
previous rule.
4.2 iMAC Registers
Flags Data Register
SCADA* - These registers/bits must be monitored and included in the trip permissives for all safety
system applications when this protocol is selected.
Bit
Description
Value
iMAC
Exception
Trigger?
R/W
Application Notes
SCADA*
0
Analogue
input moved
away from
healthy
region and
reached
Setpoint 1
1 = Warn
Yes
R
This bit is set when it
traverses the setpoint.
1
Analogue
input moved
away from
healthy
region and
reached
Setpoint 2
1 = Warn
Yes
R
This bit is set when it
traverses the setpoint.
2
Analogue
input moved
away from
healthy
region and
reached
Setpoint 3
1 = Trip
Yes
R
This bit is set when it
traverses the setpoint
i.e. typical used for Tripping
in RTGMS / Gas monitoring
SLP codes.

3
SP1 flag not
set AND
SP2 flag not
set
1 = Warn
Yes
R
Used for AIM compatibility.
4
SP2 flag set
AND SP3
flag not set
1 = Warn
Yes
R
Used for AIM compatibility.
5
Power
supply <
Setpoint A
(warn)
1 = Warn
Yes
R
This bit is set when it
traverses the setpoint.
6
Power
supply <
Setpoint B
(trip)
1 = Trip
Yes
R
This bit is set when it
traverses the setpoint
i.e. typical used for Tripping
in RTGMS / Gas monitoring
SLP codes.
