Basic Data Of The Dp Interface / Dp Slave - Siemens CP 342–5 Manual

1.2.3

Basic Data of the DP Interface / DP Slave

The following characteristics are important for successful data transfer to a DP
slave:
Table 1-4
Feature
Device database file (*.GSD)
Vendor ID
Size of the DP data areas:
– DP input area
– DP output area
Min. slave interval
SYNC / FREEZE
User parameter assignment data
User diagnostic data
Reaction Times of a DP Slave
To calculate the reaction times when operating the module as a DP slave, the
runtime of the function blocks required for DP processing in the S7-300 CPU
(DP_SEND, DP_RECV) is the decisive factor.
Table 1-5
Components
Runtime on the CPU 314-1
(6ES7 314–1AE04–0AB0)
10
Explanation / Values
File name:
CP 342-5: SIEM8093.GSD
CP 342-5 FO: SIEM8095.GSD
You can obtain device database files as follows:
S
By modem from the mailbox in the Interface Center, Fürth
Tel. 0911-737972 (from outside Germany +49-911-737972
S
On the Internet
http.\\www.ad.siemens.de under "Support, Training and
Service...Customer Support, Downloads"
CP 342-5: 8093
CP 342-5 FO: 8095
240 bytes maximum
240 bytes maximum
2 ms
not supported
3 bytes; value: 00 00 00 (fixed)
0 bytes
Explanation / Values
Per DP_SEND block:
S
0,3 – 3,2 ms at 16 bytes
S
0,2 – 5,7 ms at 240 bytes
H
H
Per DP_RECV block:
S
0,3 – 3,5 ms at 16 bytes
S
0,3 – 6,4 ms at 240 bytes
Manual CP 342–5 / CP 342–5 FO
C79000–G8976–C146/01