ABB REO 517, Applications Manual, Page: 224 / 440

214
Apparatus control
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Figure 96 shows the sending part of the reservation function. From this part, the request
(RE_BAYS) from BAYCON to reserve other bays (RE_RQ_B) are sent to other bays
by broadcast, that is, to all bays at the same time. Event Function blocks are used to send
the information to other bays (see document “Event function”).
The connection for acknowledgement (ACK_T_B) from BAYCON gives the result that
only the bay that asked for reservation gets the acknowledgement back.
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One or more event function blocks in the control terminal are used to broadcast infor-
mation from one terminal. One or several control terminals are configured to receive
this information. Each command function block can only get information from one
event function block.
The first bit in the event function block is used for reserve request (RE_RQ_B). This
signal must be steady, so the reserve request equals true means reserve and equals false
means release.
After this reserve request bit, there is one reserve acknowledgement bit (ACK_T_Bx)
for each bay that can reserve the bay. So if three bays can reserve the bay, three signals
are used.
ACK_T_B is reset after RE_RQ_B is reset. If the RE_RQ_B remains (for example due
to communication error), ACK_T_B is reset the T_CAN_RE time after V_RE_RQ is
reset.
EVENT
INPUT1 (RE_RQ_B)
INPUT2 (ACK_T_B_X)
INPUT3 (ACK_T_B_Y)
INPUT4 (ACK_T_B_Z)
.
.
.
.
INPUT 16
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RE_BAYS
ACK_T_B
X_RE_BAYS
Y_RE_BAYS
Z_RE_BAYS
Interlocking information
Broadcast sending to other bays
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