AFA4000/E VAV Airflow Controller / p.192
13.2 Diagnostics menu
The AFA4000/E Diagnostics Menu shows the current input and output status, test the alarms
and can be used to check the comms settings and operation, when the AFA4000 comms
parameter settings have been configured.
Press the ↑ / ↓ buttons together from the Run screen to access the Diagnostics Menu. The menu
contains the following Input and Output data:
Note: Use the ↑ / ↓ buttons to scroll through the options, then press Mute to select the
required parameter.
The audible alarm will sound and the screen displays the message
Testing Alarm before returning to the Diagnostics menu.
Displays the following:
• Protocol (None / TEL / Modbus / BACnet)
• Slave ID (for Modbus) or Device Instance (for BACnet)
• Baud Rate
• Parity
• Tx – Number of Data Packets transmitted (increments when
transmitting). The displayed value rolls over to zero when the
maximum count is reached.
• Rx – Number of Data Packets received (increments when
receiving). The displayed value rolls over to zero when the
maximum count is reached.
• Tx & Rx = 0. AFA4000 is not connected to the network (initial set
up).
• Tx & Rx >0, but fixed values. AFA4000 has lost connection to the
network.
• Rx is counting but Tx is a fixed value. AFA4000 is connected to
the network but the Master (BMS) is offline or not polling the
AFA4000.
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