Ziton ZP3, Installation Operation & Maintenance

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ZP3 Fire Control Panel
Maintenance
ZP3 Fire Control Panel Manual
UD1160.M Iss 6 (25/02/2005)
Page 1 - 15
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1.4 Interpretation of analogue readings
1.4.1 Introduction
The panel reads six analogue values from each device, each time it polls that device.
Each value is a whole number that can range from 0 to 255. These values can be interpreted
in order to provide a comprehensive analysis of each device and the system as a whole.
The six readings are listed below in the order in which they are read and conventionally
displayed.
Reading 1 Reference group
Reading 2 Polling group
Reading 3 Device type
Reading 4 Reference (low)
Reading 5 Device status (device analogue reading)
Reading 6 Device specific
The following sections give the meanings of each analogue reading. Reading 6 is only
meaningful for certain specialized devices. It is usually zero.
1.4.2 Reference group
The reference group reading identifies the device reference group type. This value is used
for several purposes:
•
Decide if a device is 'online' (connected) or 'offline' (disconnected).
•
Determine the health of a device and how well the device or the Line Driver Board is
calibrated.
• To identify if the device is an intrinsically safe device.
The values are interpreted as follows:
0-39 A value in this range indicates to the panel that there is no device at the
polled address. It is offline.
70-100 Values in this range indicate an intrinsically safe device. The norm for
intrinsically safe devices is 84 which indicates best calibration.
197-226 Values in this range indicate a healthy non-intrinsically safe device. The
norm for devices is 213 which indicates best calibration. If a device falls
outside the range 205-218 then it should be re-calibrated.
All others Any values falling outside the above ranges indicate a very poorly calibrated
or unhealthy device. The panel will treat devices giving out these readings
as invalid.