Omron K6PM-TH, Руководство пользователя

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6 Monitoring and Setting with the Modbus TCP
K6PM-TH Thermal Condition Monitoring Device User’s Manual (H231)
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6-2 Function Codes
This section describes function codes that can be used with Modbus TCP.
The function codes that can be used are as follows.
This function can read the contents of multiple registers starting from the specified address.
The frame configurations of Modbus TCP are as follows.
 Request
6-2-1 Function Code List
Function code Name Usages
03 hex Reading of multiple
registers Used to read the Main Unit status, alarm status, current value
of the temperature, IP address, etc.
06 hex Operation command Used to instruct software reset, K6PM-TH sensor registration,
K6PM-TH sensor mode change, K6PM-TH sensor location
registration, max. temperature reset, etc.
10 hex Writing of multiple
registers Used to set the IP address, Main Unit initial setting, etc.
6-2-2 03 hex: Reading of Multiple Registers
Frame Configurations
(1): Transaction ID Specify any value. For example, 0000 hex is used in this explanation.
(2): Protocol ID Specify 0000 hex.
(3): Number of bytes trans-
ferred Specify the total number of bytes of (4) and the successor. In the above case,
it is from (4) to (7), so it is 0006 hex.
(4): Unit ID Specify FF hex.
(5): Function code Specify 03 hex (Reading of multiple registers).
(6): Start address Specify the address to start reading.
Refer to
6-3 Register Address Lists on page 6-8.
(7): Number of words to read Specify the number of words of the register to be read. The maximum value is
125 (007D hex).
(1) (2) (3) (4) (5) (6) (7)
2 2 2 1 1 2 2
00 00 00 00 00 06 FF 03
←
Number of bytes
←Hex