405.1200.037.2 - Rel.: 2.21 of 25/02/2008
35-11
Interbus-S:
Logical
diagram
Below is a logical diagram of the VT <-> Interbus-S connections. The dia-
gram indicates how and at what level the FBs supplied by ESA interact
with the system. The FB INIT takes care of the initial configuration of the
system (input and output areas, keys area, etc.), while the FB DRIVER
takes care of the data exchange between the PLC memory and the VTs, and
viceversa. The number of FB calls within the PLC must be equal to the
number of VTs connected in the system.
PARAMETRIZED
FB INIT
ESA HMI
PROFILE
Supplied by
ESA elettronica
PARAMETRIZED
FB DRIVER
ESA HMI
PROFILE
Supplied by
ESA elettronica
OUTPUT
INPUT
LENGTH
8 BYTES
INPUT
LENGTH
8 BYTES
OUTPUT
VT#n
INTERBUS
INTEGRATED
MODULE
OR
INTERBUS
MODULE
I/O
LENGTH
8 BYTES
PLC
DATA
MEMORY
LOCAL
DATA
for FB
MASTER in
INTERBUS
SINGLE CALL
ONLY
AT STATR-UP
CYCLICAL
CALL
PLC
BUS
VT
PARAMETRIZED
FB INIT
ESA HMI
PROFILE
Supplied by
ESA elettronica
PARAMETRIZED
FB DRIVER
ESA HMI
PROFILE
Supplied by
ESA elettronica
OUTPUT
INPUT
LENGTH
8 BYTES
INPUT
LENGTH
8 BYTES
OUTPUT
VT#1
INTERBUS
INTEGRATED
MODULE
OR
INTERBUS
MODULE
I/O
LENGTH
8 BYTES
Summary of Contents for VT130W
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