AERCO C-More Controls Manual June 2010 - Manual (Page 106)

C-More Controller for Benchmark, Innovation & KC
USER MANUAL
Page 106 of 162 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 04/22/14
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Modbus Network Wiring – Continued
4. Continue connecting the + and - wire leads and shields for the remaining slave units in
the chain, as described in step 3.
5. At the end unit in the chain, activate the DIP switch labeled “MODBUS TERM” by placing
it in the up position. This will ensure that the termination resistors are activated at both
ends of the loop.
NOTE
For reliable performance, the termination resistors must be
activated on the units at the beginning and end of the physical
wiring sequence. The first and last units in terms of MODbus
address can be assigned in any sequence within the MODbus
network.
9.4 BST Status Displays
The following BST status information will be displayed on the two line VFD Display on the front
of the C-More to inform the user of critical BST real-time operating conditions:
• BST Header Temperature
Whenever a BST boiler is defined as the MASTER, the large, 3 digit display of the front
for the C-More will continuously blink and display BST HEADER TEMPERATURE.
• Master Display
The boiler defined as the MASTER will display the flowing status information on the two
line VFD display:
MASTER-DISABLED - The Master has been disabled and is not available
MASTER-STANDBY - The Master is “Cycled Off” and is available to be lit off
MASTER-IGNITED
- The Master is ignited
• Slave Displays
The boilers defined as the SLAVE boilers will display the flowing status information on
the two line VFD display:
SLAVE-DISABLED - The Slave has been disabled and is not available
SLAVE-STANDBY
- The Slave is “Cycled Off” and is available to be lit off
SLAVE-IGNITED - The Slave is Ignited
Examples:
If a Master is enabled and in Standby mode, the C-More display will display the following:
MASTER-STANDBY
8:58am 3/05/14
Alternating status message