Ampcontrol Gasguard 2 - Page 11

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 11 of 22
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– PROPERTY OF AMPCONTROL PTY LTD
– NOT TO
BE REPRODUCED IN PART
Bit
Description
Value
iMAC
Exception
Trigger?
R/W
Application Notes
SCADA*
14
Telemetry
test active
1 = Telemetry
test active
Yes
R
The GG2 Display output
value is forced via the GG2
UI or the RTGMS (iMAC
master)
Refer to Command
parameter block 0, parm 2
15
Bypass ON
1 = Bypass
detected
Yes
R
The Gasguard RTGMS uses
a DI4 for bypassing an
individual boundary (tripping)
detector, This bit is set when
the GG2 is addressed to the
corresponding bypass i.e.
the DI4 module being
monitored by the GG2.
Refer to Command
parameter block 0, parm3
Analogue Input
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*
15 - 0
4 - 20 mA
4-20mA
representation
of the Gas
Reading.
Yes
(See
parameters)
R
Value can be forced via the
Telemetry Test if system not
in Fault. Sensor Reading
shown during warmup.
 Hard
fault
values
Power Supply Input
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*
15 - 8
0 - 24 VDC (MSB
for AIM mode)
AIM Mode : 0 - 2400
(0.00 - 24.00 V)
GG2 Mode : 0 - 240
(0.0 - 24.0 V)
No
R
7 - 0
0 - 24 VDC (LSB
for AIM mode)
0 - 24 VDC (GG2
mode)