MC Technologies MC100 - Modbus Master CLI

MC100
Mobile programmable gateway
MC Technologies GmbH, Kabelkamp 2, 30179 Hannover, Germany
Tel: +49511 67 69 99-0, Fax: +49511 67 69 99-150, Website & Shop: www.mc-technologies.net, Email: info@mc-technologies.net
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Modbus Master Command line Tool
MC100 can be used as master device to read/write data command for up to 247 slave
devices.
Installation
To install the modbus command line tool you have to install the ‘mcmodbus.ipk’ from the
MC-Technologies update server.
root@MC100:~# opkg update
root@MC100:~# opkg install mcmodbus
Usage and Command lines
• Read register 0 on slave 1:
root@MC100:~# mcmodbus -a 0
• Print debug information during execution:
root@MC100:~# mcmodbus -v -a 0
root@MC100:~# mcmodbus -vv -a 0
• Show help message:
root@MC100:~# mcmodbus –h
• Read register 0 on slave 17:
root@MC100:~# mcmodbus -s 17
• Set the output of slave 17 for the I/O Pins 4,5,6 to 1 0 1:
root@MC100:~# mcmodbus -o wb - a 4 -s 17 1 0 1
• Use another device with a baud rate of 115200:
root@MC100:~#mcmodbus -d /dev/ttyUSB10 -b 115200
• Setting digital output at address 0x34 to ON:
root@MC100:~# mcmodbus -o wib -a 0x34 1
root@MC100:~# mcmodbus -o wib -a 064 1
root@MC100:~# mcmodbus -o wib -a 52 1
• Reading analog input at address 0x20 and 0x21:
root@MC100:~# mcmodbus -o rir -a 0x20 -n 2
• Setting register 8 to 0x4563:
root@MC100:~# mcmodbus -o wr -a 0x08 0x4563
root@MC100:~# mcmodbus -a 8 -o wr 17763
Note: MC100 was tested to query data using Modbus RTU trouble free in frequencies
between 20 to 40 Hz.