ABB REC 561 User Manual page 313

1MRK 580 150-XEN
Page 6 - 28
Apparatus control
1. RQ_SEL (COMCON)
2. RE_BAYS (BAYCON)
ANY_ACK
ACK_F_B (from all bays)
3. SELx (BAYCON)/
SELECT (COMCON)
4. OPEN/CLOSE (SWICON)
5. SEL_RES (SWICON)
Fig. 15 Timing diagram for the reservation function
For reservation of other bays, signal exchange between the bays is neces-
sary. The signals to reserve other bays and signals to reserve the own bay
from other bays are shown in Fig. 16, which describes the receiving part
of the reservation function. Multiple Command Function blocks are used
to receive the information from other bays (see "Command function"
1MRK 580 165-XEN).
The module BAYCON requests the reservation of other bays with
RE_BAYS and needs to know if other bays are reserved or not. It receives
the acknowledgements on the ACK_F_B inputs, which specifies that all
bays are reserved and on ANY_ACK that any bay is reserved. It also
checks the communication status (V_TX).
The logic to gather these signals from the requested number of bays (in
this example from three bays X, Y, Z) is delivery specific and made out-
side the BAYCON module. This is because the BAYCON is independent
of the number of bays to communicate with.
When the request is coming from another bay, there is one signal
(RE_RQ_B) for reservation request. V_RE_RQ is the signal for valid
request from any bay.
The EX_DA_UP input signal indicates that the program that acknowl-
edges the reservation is running. This signal is not applicable in this appli-
cation and can be set to 1=FIXD-ON.
With the inputs RE_Bx (x = 1,...8) set to 1= FIXD-ON, it is possible to
suppress the reservation of other bays at a request select (RQ_SEL) from
a specific apparatus (1,...8) in the own bay. That is, the BAYCON only
reserves the own bay.
The signal BLK_RE blocks the reservation. That is, no reservation can be
made from the own bay or any other bay. This can be set via a binary
input from an external device to prevent operations from another operator
place at the same time. This function can be overridden in the own bay
with the OVERRIDE signal, for example, from the MMI.
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