IAI America ROBO Cylinder Series - Manual (Page 198)

6. Modbus
ASCII
190
Modbus
6.4.2 Alarm Detail Description Reading <<ALAO, ALCO, ALTO>>
(1) Function
This bit reads the alarm codes, alarm detail codes and alarm occurrence time that last occurred.
When any alarm is not issued, it is “0
H
”. [Refer to 4.3.2 (1) to (3) for detail]
(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’ Register reading
Start address [H] 4 ‘0’, ‘5’, ‘0’, ‘0’ Alarm detail code
Number of registers [H] 4
‘0’, ‘0’, ‘0’, ‘6’
Reading addresses 0500
H
to 0505
H
Error check [H] 2 LRC calculation result
Trailer 4 ‘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’ Register reading
Number of data bytes [H] 2
‘0’, ‘C’
Reading 6 registers = 12
bytes
Data 1 [H] 8 Alarm detail code
Alarm address
Alarm detail code(0500
H
) [Hex]
Alarm address(0501
H
) [Hex]
Data 2 [H] 8 Alarm code Alarm code [Hex]
Data 3 [H] 8 Alarm occurrence
time (Note1)
Alarm occurrence time [Hex]
Error check [H] 2 ‘CR’, ‘LF’
Trailer 2 Silent interval
Total number of bytes 35
Note 1 The contents of data differ for the case when the model is equipped with RTC (calendar)
function and RTC is effective [1] and the case when RTC is ineffective or the model is not
equipped with RTC [2].ᴾ
[1] It shows the alarm occurrence time. [2] It shows the time [msec] passed since the power was
turned on.ᴾ