Acyclic Data Transfer Via PROFIBUS DP
Acyclic data exchange takes place between the ET 200iSP and the PG / PC (SIMATIC PDM).
The ET 200iSP receives its parameters using acyclic data exchange. Identification data is also
transferred and displayed in SIMATIC PDM.
● Diagnostics and interrupts (with S7 DP slave and DPV1 slave)
● Data records
DPV0, S7 DP, or DPV1 slave
The ET 200iSP can be operated as a DPV0, S7 DP or DPV1 slave. The following table
compares the functions.
Table 6-1
Comparison of DPV0, S7 DP and DPV1
Function
DPV0
slave
S7 DP
slave
DPV1
slave
Comment
Parameter assignment and configuration with
GSD file
X
---
X
Configuration and parameter assignment with
HW Config
X
1
X
X
1
Cyclic data exchange
X
X
X
Acyclic data traffic (read/write
data record)
● Free access to
parameters on the field
device
● Reassignment of
parameters of the
application process
Class 1 services
(parameter as‐
signment mas‐
ter, e.g. PLC)
---
X
X
Class 2 services
(for example,
PD/OP)
X
X
X
Diagnostics
One interrupt can be re‐
ported per diagnostic
frame. For DPV1 and S7
DP slaves, an interrupt
consists of a slave diag‐
nostic accompanied by
an acknowledgment
mechanism not inclu‐
ded in DPV0.
● ID-related diagnostics
X
X
X
● Module status
X
X
X
● Channel-related diagnostics
X
X
X
Interrupts
● Diagnostic interrupt
---
X
2
X
● Hardware interrupt
---
X
2
X
● Remove/insert interrupt
---
X
X
● Update interrupt
---
---
X
● Time stamping
---
X
X
1
If you configure the ET 200iSP using the GSD file (in HW Config), you will need SIMATIC PDM for
parameter assignment.
2
For the S7 DP slave, diagnostic and process interrupts are only reported when the CPU is in RUN
mode.
Commissioning and Diagnostics
6.1 Basics of commissioning and diagnostics
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
135