ABB REC 561 User Manual page 508

ABB Network Partner AB
Version 1.0-00
3.3 Communication
between terminals
Event function
The BOUND and INTERVAL inputs are available on the Event function
block in REC 561 control terminal.
The BOUND input set to 1 means that the output value of the event block
is bound to another control terminal on the LON bus. The Event function
block is then used to send data over the LON bus to other REC 561 con-
trol terminals. The most common use is to transfer interlocking informa-
tion between different bays. That can be performed by an Event function
block used as a send block and with a Multiple Command function block
used as a receive block. In Apparatus Control, (1MRK 580 150-XEN)
describes how to transfer the interlocking information. The configuration
of the communication between control terminals is made by the LON Net-
work Tool.
The INTERVAL input is applicable only when the BOUND input is set to
1. The INTERVAL is intended to be used for cyclic sending of data to
other control terminals via the LON bus with the interval time as set. This
cyclic sending of data is used as a backup of the event-driven sending,
which is always performed. With cyclic sending of data, the communica-
tion can be supervised by a corresponding INTERVAL input on the Mul-
tiple Command function block in another control terminal connected to
the LON bus. This INTERVAL input time is set a little bit longer than the
interval time set on the Event function block (see "Command function",
1MRK 580 165-XEN). With INTERVAL=0, only event-driven sending is
performed.
The event-driven sending of data to other control terminals over the LON
bus is performed with a resolution of typical 200 ms.
1MRK 580 140-XEN
Page 6 - 223