Siemens SIMATIC MV500, Operating Instructions Manual, Page: 169 / 294

Process interfacing via an automation system (PLC, PC)
9.3 Control with Ident profile
SIMATIC MV500
Operating Instructions, 03/2021, C79000-G8976-C494-05
169
9.3.2.6 Preconditions for the commands
If you want to issue a command, make sure that the preconditions are met. If the
preconditions are not met, the command receives a negative acknowledgment. The following
table provides an overview of the requirements that must be fulfilled.
Table 9- 32 Overview of preconditions to be met
Command Trigger
source
Result
(binary)
Result
string
Control DISA No group
error
Processing
mode
Stop mode
Program
change (write
program num-
ber)
∼ ∼ ∼ CM or
PROFINET I
O
∼ ☑ ☑ ☑
Read program
number
∼ ∼ ∼ CM or
PROFINET I
O
∼ ☑ ∼ ∼
Write match
string
∼ ∼ ∼ CM or
PROFINET I
O
∼ ☑ ☑ ☐
Read match
string
∼ ∼ ∼ CM or
PROFINET I
O
∼ ☑ ☑ ☐
Set DISA bit ∼ ∼ ∼ CM or
PROFINET I
O
∼ ☑ ∼ ∼
Reset DISA bit ∼ ∼ ∼ CM or
PROFINET I
O
∼ ☑ ∼ ∼
Set digital out ~ ~ ~ CM or
PROFINET I
O
~ ~ ~ ~
Read result ∼ ∼ CM or
PROFINET I
O
∼ ∼ ☑ ☑ ☐
T read
result string
CM or
PROFINET I
O
∼ CM or
PROFINET I
O
∼ ∼ ☑ ☑ ☐
Acknowledge
group error
∼ ∼ ∼ CM or
PROFINET I
O
∼ ☐ ☐ ☐
∼ Selection is unimportant.
☑ State must be satisfied.
☐ State is not permitted.
CM If the IP mode "PROFINET (Ident profile)" is set, you must select PROFINET IO; oth-
erwise, select CM.
The "Trigger source", "Result", "Result text" and "Control" columns can be configured using the
WBM ("Settings > Communication > Use > Connection").