Baumer N 140 - Manual (Page 13)

N 140
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4.3.4. Read / write parameter measuring unit, command „i“ (69h)
The command is to read or write the measuring unit in mm or inches.
Data = 0 (30h) = mm
Data = 1 (31h) = inch
Example 1: Read parameter (parameter = mm)
SOH Adr Cmd EOT CRC
Transmission
01h 20h 69h 04h 5E
SOH Adr Cmd Data EOT CRC
Response
01h 20h 69h 30h 04h D0h
Example 2: Change measuring unit to inches
SOH Adr Cmd Data EOT CRC
Transmission
01h 20h 69h 31h 04h D2
SOH Adr Cmd Data EOT CRC
Response
01h 20h 69h 31h 04h D2
Example 3: Write mm as measuring unit into all N 140 by broadcast command (identifier/address=99)
SOH Adr Cmd Data EOT CRC
Transmission
01h 83h 69h 30h 04h CDh
Response Not confirmed
Important: Parameters are entered in mm and converted into inches by the SPA when displaying the position
values.
4.3.5. Read and write specific parameter „x“ (78h)
The specific parameter „x“ comprises several sub-parameters enabling alteration of originally permanent
parameters to adapt them to new circumstances. At present, the following sub-parameter is available:
D (44h) = minimized delay time of serial interface
Sub parameter: Delay time „D“ (44h)
This parameter defines the minimum delay time (timeout) between the last bit received and the first bit of the
response transmitted. Delay time is in steps of 0.1 ms within the range from 00.0...60.0 ms. Default is 1.0 ms.
Example 1: Read current delay time
SOH Adr Cmd Sub EOT CRC
Transmission
01h 20h 78h 44h 04h 7Ch
SOH Adr Cmd Sub Delay time = 4.5 EOT CRC
Response
01h 20h 78h 44h 30h 30h 34h 35h 04h BBh
Example 2: Write new delay time
SOH Adr Cmd Sub Delay time = 15.0 EOT CRC
Transmission
01h 20h 78h 44h 30h 31h 35h 30h 04h BDh
SOH Adr Cmd Sub Delay time = 15.0 EOT CRC
Response
01h 20h 78h 44h 30h 31h 35h 30h 04h BDh
Please note that the true delay time might be extended. It depends on the required processing time as well as
on internal software cycles. The tolerance is approx. 8 ms.