Siemens ET 7Y Series Especificaciones descargar pdf (Pagina 183)

Changing IM 151-7 CPU (6ES7 151-7Ax00..) to IM 151-7 CPU (6ES7 151-7AA10-0AB0)

11-3

ET 200S IM 151-7 CPU Interface Module

A5E00058783-04

Changed runtimes during program processing

If you have created a user program that is optimized for the execution of certain

processing times, it is important to note the following when using the

IM 151-7 CPU (6ES7 151-7AA10-0AB0):

 Program processing in the IM 151-7 CPU is significantly faster.

 Functions that require MMC access (e.g. system runup, program download in

RUN, DP station recovery, etc.), may run slower on the IM 151-7 CPU.

Changing the diagnostic addresses of DP slaves

It is important to note that the diagnostic addresses for the slaves may have to be

reassigned in some cases since two diagnostic addresses per slave are

sometimes required due to adaptation to the DPV1 standard.

 The virtual slot 0 has its own address (diagnostic address of the station proxy).

The module state data for this slot (read out with SFC 51 ”RDSYSST”) contains

the identifiers which affect the complete slave/station, e.g. the ”Station Faulty”

identifier. The station failure and station recovery are also signaled in the OB 86

of the master via the diagnostic address of the virtual slot 0.

 Furthermore, slot 2 also has its own address in the case of modules integrated

in STEP 7 (e.g. IM 151-7 CPU as I slave). This address is used to signal the

change in operating state in the diagnostic interrupt OB 82 of the master, e.g.

with IM 151-7 CPU as I slave.

Note

Reading out the diagnosis with SFC 13 “DPNRM_DG”:

The diagnostic address originally assigned still functions. Internally, STEP 7

assigns slot 0 to this address.

If you use the SFC 51 ”RDSYSST” to read out, for example, module state

information or rack/station state information, you must also take the changed

meaning of the slots and the additional slot 0 into consideration.

Using consistent data areas in the process image with DP slaves

Below is a list of the points to which you must pay attention with communication in

a DP master system if you want to transfer I/O areas with the ”Total Length”

consistency.

 If the address area of consistent data is in the process image, this area is

updated automatically.

 You can also use the SFCs 14 and 15 to read and write consistent data.

 If the address area for consistent data is outside the process image, you must

use the SFCs 14 and 15 to read and write consistent data.

 It is also possible to address the consistent areas directly (for example, L PIW

or T PQW).

You can transfer a maximum of 32 bytes of consistent data.

1 2 ... 178 179 180 181 182 183 184 185 186 187 188 ... 213 214

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