Table of Contents
Advertisement
The following are the descriptions for two alarm types.
Momentary Alarm
The alarm status is cleared while the analog input is not exceeding the alarm value.
For example:
If analog input value of channel 0 (30000) > High Alarm value (40296), the address
10224 is 1, else it is 0.
If analog input Value of channel 0 (30000) < Low Alarm value (40328), the address
10256 is 1, else it is 0.
The address 10224 to 10255 is the high alarm indicator. If a high alarm occurred, the
value of register is 1. In normal condition, it will be 0. The address 10256 to 10287 is
the low alarm indicator. If a low alarm occurred, the value of register is 1. In normal
condition, it will be 0.
Latch Alarm
When the Latch Alarm mode is enabled, the register stays latched until the specified
registers are cleared.
For example:
If analog input value of channel 0 (30000) > High Alarm value (40296), the address
10224 is 1, else if analog input value of channel 0 (30000) < Low Alarm value
(40328), the address 10256 is 1.
The address 10224 to 10255 is the high alarm indicator. In normal condition, the
value of register is 0. If a High alarm occurred, the value of register stays 1 until the
address 00764 to 00795 is cleared. The address 10256 to 10287 is the low alarm
indicator. In normal condition, the value of register is 0. If a low alarm occurred, the
value of register stays 1 until the address 00796 to 00827 is cleared.
Page: 141
Advertisement
Table of Contents
