Bronkhorst IQ+FLOW (from 01-07-2013) - Manual (Page 18)

Bronkhorst High-Tech B.V.
IQ+FLOW 9.17.045 18
3.5.2 Software
When using a pc to communicate with IQ + FLOW® instruments only the FLOW-BUS protocol is supported by Bronkhorst software.
When using Modbus operation, software from third parties, such as LabView, ModScan or a Modbus PLC must be used to serve as
Modbus master.
Note: an IQ + FLOW® instrument set for RS485 FLOW-BUS or Modbus communication will not respond when
connecting to an RS232 configuration. When required press the micro-switch according to the procedure in section
3.3.1 at start-up to activate the 'Configuration Mode'. The baud rate and bus type are set to 38k4 and RS232 FLOW-
BUS (Propar). For multi-channel instruments the communication type can be set with the rotary switches.
3.5.3 Slave address, baud rate and parity setup
The IQ + FLOW® instrument is configured as specified on order. If there is a need of changing any of the specified settings, see the
tables below for the supported configurations. The default selections are presented in bold.
Single-channel versions
Mode: Analog Digital
Interface/medium: - RS232 RS485
Bus protocol: - Propar FLOW-BUS Modbus RTU Modbus ASCII
Baud rate: - 9600
19200
38400
57600
115200
187500
400000
9600
19200
38400
56000
57600
115200
9600
19200
38400
56000
57600
115200
Node address: - 3…125 3…125 1…247 1…247
Parity: - None* None* None; Even; Odd None; Even; Odd
In case the baud rate or node address of an IQ + FLOW® instrument needs to be changed, this can be done with the micro-switch or
by changing the settings in the 'Configuration Mode'. Other parameters can be changed only in the 'Configuration Mode'. For
changing the mentioned parameters with the micro-switch see Section 4.2.5. When using the 'Configuration Mode' to change
these settings, activate the 'Configuration Mode' by pressing the micro-switch at start-up according the description in Section 3.3.1.
In 'Configuration Mode' the baud rate and bus type are set to 38k4 and RS232 FLOW-BUS (Propar). Change the appropriate
parameters as described in Section 4.2.5. When finished, deactivate the 'Configuration Mode' using the same procedure. Now the
instrument is ready to use in desired configuration with the adjusted baud rate, node address or parity.
Multi-channel versions (select with rotary switches)
Mode: Digital
Interface/medium: RS232 RS485
Bus protocol: Propar Modbus RTU
Baud rate: 38400
115200
9600
19200
38400
Node address: 3…99 1...99
Parity: None* Even
* Not selectable