Leuze BPS 34 SM 100, Original Operating Instructions

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Protocols for position value output
Leuze electronic GmbH + Co. KG BPS 8 69
9.2.2 Request telegram to the BPS 8 SM 10x
-
02
The request telegram consists of one byte.
Request telegram structure
Description
Bits S2, S1, S0: If all bits are set to 0, the position data are output.
The position data request cycle must be greater than 10 ms. If no position data request
occurs within 10 s, the laser is deactivated. A response telegram is sent to a repeat position
data request after approx. 30 ms.
If only the S0 bit is set to 1, the marker data are output.
If only the S1 bit is set to 1, the diagnostic data are sent in response. An indicated error
is reset once all diagnostic data has been polled. This is indicated by the status LED
changing from red to green.
If only the S2 bit is set to 1, position data are output once (laser on – measurement – laser
off).
The response telegram to the single measurement request is sent after around 40 ms.
The single measurement request cycle must be greater than 40 ms.
Byte
no.
Designation Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Request byte 1 0 1 1 S2 S1 S0 A1 A0
Byte Bit Name Function Description
0
0
A0 Address A1A0 in
RS 485 network
00 = Address 0
01 = Address 1
1
A1 10 = Address 2
11 = Address 3
2
S0 Coded data request
through the 3 bits S2,
S1, S0
Coded request
S2 S1 S0
Meaning
3
S1
0 0 0
Request position data
0 0 1
Request marker data
4
S2
0 1 0
Request diagnostic data
1 0 0
Request one-time position data transfer
5 – None Without function, bit permanently set to 1
6 – None Without function, bit permanently set to 1
7 – None Without function, bit permanently set to 0
8 – None Without function, bit permanently set to 1
NOTE
A0 and A1 are the address bits. If several BPS 8 operate in an RS485 network, an address
configuration is required. Every BPS 8 is supplied with the Standard address 0. The address
assignment (Default: 0) is performed using the BPS Configuration Tool (see chapter 8.5.3
"Communication").
NOTE
RS485 network!
An MA 8-01/MA 8-02 connection unit is mandatory for the operation of the BPS 8 in an RS485
network (see chapter 4.2 "MA 8-01 / MA 8-02 connection unit").
NOTE
Only ever one of the S2, S1, S0 bits should be set in the request byte, because the BPS can
only respond to one request. If several bits are set, the function with the highest priority is
executed.