Modbus – IAI America ROBO Cylinder Series User Manual
Page 225
6. Modbus
ASCII
217
Modbus
6.4.13 Controller Status Signal Reading 3 <<DSSE>>
(1) Function
Internal statuses (expansion device) of the controller are indicated.
[Refer to 4.3.2 (14), “Data of expansion device status registers.”]
(2) Query format
Field
Number of characters ASCII mode character
string (fixed)
Remarks
Header
1
‘:’
Slave address [H]
2
Arbitrary
Axis number + 1
(01
H
to 10
H
)
Function code [H]
2
‘0’, ‘3’
Reading registers
Start address [H]
4
‘9’, ‘0’, ‘0’, ‘7’
Expansion device status
register
Number of registers [H]
4
‘0’, ‘0’, ‘0’, ‘1’
Reading address 9007
H
Error check [H]
2
LRC calculation result
Trailer
2
‘CR’, ‘LF’
Total number of bytes
17
(3) Response format
A response message contains 16 bits of data per register.
Field
Number of characters ASCII mode character
string (fixed)
Remarks
Header
1
‘:’
Slave address [H]
2
Arbitrary
Axis number + 1
(01
H
to 10
H
)
Function code [H]
2
‘0’, ‘3’
Reading registers
Number of data bytes [H]
2
‘0’, ‘2’
Reading 1 register
= 2 bytes.
Data [H]
4
Expansion status
Expansion status [Hex]
Error check [H]
2
LRC calculation result
Trailer
2
‘CR’, ‘LF’
Total number of bytes
15