Indicate identifier in the display „a“ (41h), Extended identifier command „ax“ (41h, 58h) – Baumer N 152 User Manual
Page 24
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4.4.1. Assigning device identifiers in the network „A“ (41h)
This command is creating an automated process assigning the device identifier in successive order to every
single SPA upon commissioning of the system. The first identifier to be assigned is broadcasted to all networked
SPAs as follows:
SOH
Adr
Cmd identifier = 01
EOT
CRC
Transmission
01h
83h
41h
30h
31h
04h
B4h
All SPAs now show the identifier just transmitted and that is to be assigned in the upper display. The bottom line
indicates the device-specific identifier.To make the SPA adopt the new identifier, the shaft must be turned by half
at least (direction does not matter). The identifier is now adopted and indicated in the bottom line of the display
(as new device-specific identifier). Both identifiers are now identical. As soon as the shaft is in idle position again
and after having elapsed 3 seconds, the SPA will transmit the following command „B“ (42h) as confirmation to
master:
SOH
Adr
Cmd identifier = 01
EOT
CRC
Transmission
to master
01h
21h
42h
30h
31h
04h
86h
The Master can now transmit command „A“ with the next identifier to be assigned as previously described.
This way, the different (successive) identifiers are automatically assigned to all networked SPAs, one after the
other.
Important: Confirmatory command „B“ transmitted by SPA to master will be repeated after 3 seconds provided
the master has not previously transmitted another „A“ command.
Indicate identifier in the display „A“ (41h)
This command less parameters as a broadcast command (address/Identifier=99) will make every networked
SPA indicate the device-specific identifier in the bottom line of the display. The upper line is blind.
This command is a designated broadcast command.
SOH
Adr
Cmd
EOT
CRC
Transmission
01h
83h
41h
04h
80h
Response
Not confirmed
SPA remains in this mode until being switched off and on again or until transmission of another command
except „A“, „R“, „t“ or „u“.
If this command is transmitted to a valid device identifier (except 99) without any parameters, the respective SPA
will return to standard operating mode and reply the actual device identifier.
SOH
Adr
Cmd
EOT
CRC
Transmission
01h
21h
41h
04h
0Ah
SOH
Adr
Cmd Identifier =01 EOT
CRC
Response
01h
21h
41h
30h
31h
04h
9Eh
Extended identifier command „AX“ (41h, 58h)
This extended command is utilized to address individual SPAs in the bus network in a similar way as described
above. By broadcast command the identifier to be assigned is transmitted to all networked SPAs as follows:
SOH
Adr
Cmd Cmd2 Identifier = 01
EOT
CRC
Transmission
01h
83h
41h
58h
30h
31h
04h
40h
Similar to the standard command all SPAs now indicate the identifier just transmitted which is to be assigned in
the upper display. Adopting the identifier is in the same way. However, contrary to the above there is not any
acknowledgement „B“ in reply. Checking whether the new identifier has been adopted is up to master, for
example utilizing command “R” (read actual value). The R-command with the corresponding identifier is
transmitted to the SPA. If the addressed SPA confirms that the assignment was successful, the master can
proceed with next identifier. Regarding other commands the display of the respective SPA switches to standard
operation.