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Manual Documentation Number: RT-12 series-4006m 43
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
44 Manual Documentation Number: RT-12 series-4006m
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
(Note: Four analog outputs available on specific RT-12 series models.)
To program each analog resting output voltage, enter a voltage from 0.0 to 5.0, into
each box representing Analog Output 1, Analog Output 2, Analog Output 3, and
Analog Output 4. Then press “Send Resting and Limits Æ Device”. This data is saved
and remains resident within the respective RTU. This process is valid ONLY if the
RTU is “Connected”.
The respective RTU is also equipped with the ability to turn on or off its output if a
Communications error occurs. This is true for the Master and Slave.
The output is an Open Drain output and should be used to sink not source current,
1Amp MAX. This typically means that the Output will supply a “Ground” to the
device to turn it on or off.
The respective RTU also has the ability to control its respective Output during a
communications failure. The output may be configured to an ACTIVE HIGH or
ACTIVE LOW state during a communications failure. This can be useful as an alarm
output or to turn a device on or off. A “Check” mark next to the “Discrete Output Comm
Fail Enable” will force the output to an active HIGH or LOW, (depending on what is
selected for an Active High or Active Low), during a communications failure. If you
use the output to respond during a communications failure, you will not have control
using the Modbus protocol. If you wish to use the output for something other than a
comm. failure you will need to disable the “Discrete Output Comm Fail Enable”.