Baumer N 153 - Manual (Page 22)

N 153
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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 net-
worked 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 dis-
play (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 confirma-
tion 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 ex-
cept „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 ex-
ample utilizing command “R” (read actual value). The R-command with the corresponding identifier is transmit-
ted 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 opera-
tion.