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M-7026 User Manual Rev: 1.5 Date: 2016/03/10
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1.10 M-7000 Notes
The main difference between the I-7000 and M-7000 series is that
the M-7000 series has additional support for the Modbus RTU
communication protocol, which is the default protocol of the M-7000
series. The communication Baud Rates for the Modbus RTU
protocol can be in the range of 1200 bps to 115200 bps, and the
parity, data and stop bits are fixed as no parity, 8 data bits and 1
stop bit.
Modbus functions supported by the module are described in
Chapter 3.
1.10.1 Protocol Switching
To switch to the DCON protocol:
1.
Uses sub-function 06h of the function 46h and set byte 8 to a
value of 1. See Section 3.4.4 for details.
2.
After a power-on reset, the communication protocol will be
changed to DCON.
To switch to the Modbus RTU protocol:
1.
Sends the $AAPN command and set N to a value of 1. Note that
the slide switch on the rear side of the module should be set to
INIT position, see the figure on the next page. See Section 2.34
for details.
2.
After a power-on reset, the communication protocol will be
changed to Modbus RTU protocol.
Содержание M-7026
Страница 8: ...M 7026 User Manual Rev 1 5 Date 2016 03 10 8 1 3 Pin Assignments...
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Страница 13: ...M 7026 User Manual Rev 1 5 Date 2016 03 10 13 1 6 Application Wiring...
Страница 39: ...M 7026 M 7026 User Manual Rev 1 5 Date 2016 03 10 39 Related Topics Section 1 8 1 Analog Input Calibration...
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Страница 43: ...M 7026 M 7026 User Manual Rev 1 5 Date 2016 03 10 43 Section 1 8 1 Analog Input Calibration...
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