EKO INSTRUMENTS CO., LTD. - Pyranometer MS-80/80S/80U - Instruction Manual Ver. 1
Pg. 57
A4-3. Communication specification
・ The address range can be used from 1 to 247.
・ The maximum frame size that can be communicated at a time is 256 bytes (maximum read registers: 125,
maximum write registers: 123).
・ The baud rate (bit/sec) can be selected from 2400, 4800, 9600, 19200, 38400 and 115200.
・ Parity can be selected from “Even”, “Odd” or “None”.
・ The bit width is 8 bits, the stop bit is 1 bit when parity is present, and 2 bits when parity is absent.
・ If the address and communication settings are changed, the equipment must be restarted.
Table A4-3. Communication setting
Setting No. Bit rate Parity
0 2400 None
1 2400 Even
2 2400 Odd
3 4800 None
4 4800 Even
5 4800 Odd
6 9600 None
7 9600 Even
8 9600 Odd
9 19200 None
10 (default) 19200 Even
11 19200 Odd
12 38400 None
13 38400 Even
14 38400 Odd
15 115200 None
16 115200 Even
17 115200 Odd
A4-4. Cable connection
・ RS485 communication ground and the power ground are the same.
Be sure to connect the ground of RS485 communication interface to the power ground.
A4-5. Data format
Table A4-4. Data format to use
Format Abstract
U16 Unsigned 16bit Integer
S16 Signed 16bit Integer
U32 Unsigned 32bit Integer
S32 Signed 32bit Integer
F32 IEEE754 32bit floating point format
Str ASCII characters string
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