Stulz C7000 - Bus Layout

156 EN/06.2019/G57 © STULZ GmbH – all rights reserved
C7000 INSTRUCTIONS fOR a/C UNITS
7.3 Bus Layout
7.3.1 General
7.3.2 Configuration of the IO bus
The configuration of the bus is done automatically during start-up and operation. That means that all connect-
ed bus participants log on automatically. The same applies in case of a failure - all bus participants are logged
off automatically.
Following preconditions must be fulfilled:
1. Each bus participant has its own bus address which must be unique in the bus system.
2. Bus addresses must range between 0 and 19.
3. All bus participants are connected appropriately with bus cables according to requirements (see next page).
4. The bus has to be terminated at the beginning and at the end.
Each bus participant saves the latest registered configuration during shut-down. Furthermore the bus partici-
pant expects the same configuration after its next start-up.
In case new systems have logged on to the bus during the shut-down period, the bus participant detects
these systems and records them in the bus configuration without editing a message or an alarm.
In case a system has been disconnected from the bus which was active before shut-down, the bus participant
detects this condition and a bus error is triggered in the bus participant after the end of the alarm delay.
The same happens when a bus participant (C7000IOC or C7000AT) is de-energized during operation.
All systems that are connected to the bus detect a bus error automatically. Accordingly this error is displayed
on the C7000AT and C7000IOC.
The IO bus consists of maximum 20 participants. In case of the C7000 system only C7000IOC or C7000AT
bus participants can be in the IO bus.
Each bus participant has its own IO bus address which must only appear once in the data bus.
The IO bus addresses range from 0 to 19.
The display of the C7000AT shows the IO bus addresses in a bus overview (start window) as follows: