Siemens SIMATIC S7-1500T Reference Manual

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Extended instructions
Basic instructions
Technology
Communication
S7-300/400
S7-1200 S7-1500
Instruction
Operating
state
of
partner
controller
Property of
the data
transfer
Guaranteed user
data size for
specified partner
controller
Application
Notes
✔
✔
✔
GET
RUN or
STOP
Reliable with
acknowledgme
nt
S7
-300: 160 bytes
S7
-400: 400 bytes
S7
-1200: 160 bytes
S7
-1500: 880 bytes
Accessing data in the
target
controller
without any
programming.
For example, read
operating data.
You have to use data
blocks with absolute
addressing. Symbolic
addressing is not
possible. You must also
enable this service in the
CPU configuration in the
"Protection" area
.
✔
GET_S
✔
✔
✔
PUT
Changing data in the
target
controller
without any
programming.
For example, write
parameters in a data block and
change a recipe.
✔
PUT_S
✔
✔
BSEND/BRCV:
RUN
S7
-300: 32768/
65534 bytes
S7
-400: 65534 bytes
S7
-1500:
65534 bytes,
optimized:
65535
bytes
Exchange large amounts of data.
For example,
send data block with
measured value logs to a SCADA
system for further evaluation.
Coordinated transmission
(
See above)
✔
✔
USEND/URCV
Fast,
without
acknowledgme
nt
S7
-300: 160 bytes
S7
-400: 440 bytes
S7
-1500: 920 bytes
Control multiple
controllers, or
send data to multiple
controllers.
For example,
distribute actual
values
of a sensor to several
controllers.
Uncoordinated
transmission
(
See above)
✔
USEND_S/
URCV_S

Siemens SIMATIC S7-1500T Specifications

General

Brand	Siemens
Model	SIMATIC S7-1500T
Category	Controller
Language	English