8VZZ000021L320 ABB H&B Contronic

8VZZ000021L320    ABB H&B Contronic    

One single CPU is the master on the bus,

all of the other remote units or CPU are considered to be slaves.

The master CPU manages up to a maximum of 31 remote units on one bus.

All messages are terminated with an error check (CRC8).

The format of the messages :

- request from the master CPU

Address Data CRC8

- response from the remote units

Start Data CRC8

During initialization, the central unit interrogates all of the remote units in succession, thus building an image of the system configuration.

On each cycle of the bus all of the remote units are interrogated.

This updates all diagnosis information and recognizes additional remote units.

If the CPU or one of the remote units receives a message with a (CRC8) error, it is ignored.

After ten consecutive transmission errors, an error "Bus error" is generated on the remote units and within the diagnosis of the central unit.

"SPNPM22 "

SS832

TA25 DU 32

TA521

TA524

TB820-2V2

TB850

TB850 3BSC950193R1

TB852

TBU850

TC514V2

TC820-1

TET106 11355-0-6050000

TK212A

TK516

TK851V007

TK851V010

TP830

TP830-1

TPPB-02

TTH300-Y0

TU810V1

TU830V1 3BSE013234R1