260 Properties of the Modules
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
The shunt calibration duration is discretely adjustable between 100 ms and 60 s and determines how
long the resistor shunts the measurement bridge. If a calibration process is currently running, any new
command to perform balancing is ignored until the current process is over. The duration doesn't depend
on the way the calibration is triggered.
Setting the shunt calibration duration
Bridge amplifier -> Index card “General” -> Combo box “Shunt calibration”
Setting the shunt calibration to be triggered via CAN-bus is analogous to the bridge balancing. Bit 5
(hexadecimal 0x20) in the Byte triggers calibration with the value "1". (Bit 0 is the LSB).
Setting shunt calibration via Can-bus
Bridge amplifier -> Index card “Balance” -> “Allow shunt calibration or bridge balance via CAN-bus”
Setting the message ID:
Bridge amplifier -> Index card “Balance” -> Enter ID “Identifier for bridge balance message.
The shunt calibration is realized in such a way that the shunt is applied for a limited time. Select a
duration which is sufficient for observing the signal level. Once this time duration has elapsed, the shunt
is disconnected from the circuit so that it isn't forgotten.
If you use an imc device to measure, see application notes in chapter Field Busses of the imc
DEVICES manual. There are examples how to use imc Devices- and imc CANSAS-software step by
step.
6.1.6 Connector plugs BRIDGE2
For the pin assignment of the DSUB-15 plugs see here .
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