Example – Yokogawa JUXTA M Series Digital Limit Alarms MVTK User Manual

Page 57

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<5. MODBUS Communication >

5-11

IM 77J04J11-01E 1st Edition : 2006.08.25-00

Example:

Setting 200, 10 and 3 into the alarms-1 setpoint, alarm-2 setpoint and alarm-3 setpoint of
the M Series with address number 02, respectively.

The following message writes 200, 10 and 3 in this order in the ASCII mode, starting at the
alarm-1 setpoint (D0101) of address number 02 .

[Message]

Start of message mark

: 0210006400030600C8000A0003AC[CR][LF]

"02": address number 02, "10": function code 16, "0064": D-register start number 0101,

"0003": number of D registers 3, "06": byte count, "00C8": alarm-1 setpoint 200,

"000A": alarm-2 setpoint 10, "0003": alarm-3 setpoint 3, and "AC": error check

Note: The numbers in quotation marks are hexadecimal.

The following response is returned with respect to the above message.

[Response]

: 02100064000387[CR][LF]

The number of registers is 3.

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