Baumer N 141 User Manual download pdf (Page 6)

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3.4. Broadcast commands

Some specific commands are defined as so-called broadcast commands. As soon as the master broadcasts a

command to identifier 99, the command is addressed to every SPA in the network. Each individual spindle

position display will accomplish the respective command but will not respond any confirmation to master.

3.5. Data saving

Specific parameters are saved in EEPROM (1.000.000 writing cycles). Data saving is via interface upon every

parameter transmission to SPA.

Important:

There should not be a cyclic transmission of these parameters to the SPA but only if necessary, for example in

case of parameter alteration. The parameters that are saved in EEPROM are listed in the charts in chapter

“Command explanations” or “Overview on commands”.

4. Command explanations

4.1. General information

The following is describing the individual interface commands broken down into the four groups below:

- operating commands [ commands required during operation ]

- parameter commands [ commands for SPA parameterization ]

- identifier commands [ commands to indicate or alter the device identifier (address)]

- specific commands [ commands for specific functions as device reset or version number readout]

The following abbreviations are applied:

SOH = Start of heading (header token)

EOT = End of transmission (footer token)

Adr = Device address, including offset 20h

Cmd = Command

Data = data transmitted or received

4.2. Operating commands

Command

code

Data amount

inbytes

read write Broad-

cast

Save in

EEPROM

significance

C (43h) 3 / 11 X - - - Check if current value = target

R (52h) 6 X - - - Read current value

T (54h) 7 X - - - Read current value and softkey status

S (53h) 8 X X - X Read / write target

U (55h) 6 X X - - Offset

V (56h) 2 X X X X Read / write profile number

Z (5Ah) 6 X X X X Set preset

t (74h) 6 - X - - Transmit tool number

u (75h) 6 - X - - Transmit optional number sequence

1 2 3 4 5 6 7 8 9 10 11 ... 21 22

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