Varec 2920 Installation And Operation Manual page 62

2920 Float & Tape Transmitter
52
The right status indicators display input and output status, and an indicator that shows the unit
is functioning normally.
The top indicator displays digital input status, as a single hexadecimal digit, 0 to F. Bit 0
indicates digital input 1. Bit 1 indicates digital input 2. Bit 2 indicates digital input 3. Bit 3
indicates digital input 4. A value of 0 indicates that no digital inputs are active. A value of F
indicates that all for digital input are active.
The middle indicator displays the output relay status as a single hexadecimal digit, 0 to F. Bit 0
indicates digital relay 1. Bit 1 indicates digital relay 2. Bit 2 indicates digital relay 3. Bit 3
indicates digital relay 4. A value of 0 indicates that no relays are active. A value of F indicates
that all for relays are active.
The following table shows the activity of the Digital Input or Output Relay for each
hexadecimal digit.
Hex Indicator Input 1/
Relay 1
0 Inactive
1 Active
2 Inactive
3 Active
4 Inactive
5 Active
6 Inactive
7 Active
8 Inactive
9 Active
A Inactive
B Active
C Inactive
D Active
E Inactive
F Active
The lower indicator is a bar that sequences about every 1/2 second to indicate the transmitter
CPU is running. This indicator is commonly referred to as the heartbeat.
Input 2/ Input 3/
Relay 2 Relay 3
Inactive Inactive
Inactive Inactive
Active Inactive
Active Inactive
Inactive Active
Inactive Active
Active Active
Active Active
Inactive Inactive
Inactive Inactive
Active Inactive
Active Inactive
Inactive Active
Inactive Active
Active Active
Active Active
5 Display and Configuration Interface
Input 4/
Relay 4
Inactive
Inactive
Inactive
Inactive
Inactive
Inactive
Inactive
Inactive
Active
Active
Active
Active
Active
Inactive
Active
Active
Installation and Operations Manual