Varec 2920, Installation And Operation Manual, Page: 62 / 194

2920 Float & Tape Transmitter 5 Display and Configuration Interface
52 Installation and Operations Manual
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.
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.
Hex Indicator Input 1/
Relay 1
Input 2/
Relay 2 Input 3/
Relay 3 Input 4/
Relay 4
0 Inactive Inactive Inactive Inactive
1 Active Inactive Inactive Inactive
2 Inactive Active Inactive Inactive
3 Active Active Inactive Inactive
4 Inactive Inactive Active Inactive
5 Active Inactive Active Inactive
6 Inactive Active Active Inactive
7 Active Active Active Inactive
8 Inactive Inactive Inactive Active
9 Active Inactive Inactive Active
A Inactive Active Inactive Active
B Active Active Inactive Active
C Inactive Inactive Active Active
D Active Inactive Active Inactive
E Inactive Active Active Active
F Active Active Active Active