YASKAWA VIPA SPEED7 - FB;SFB 8 - FB 55 - Overview

8.2.6 FB/SFB 8 - FB 55 - Overview
With the Siemens S7 connection large data sets may be transferred between via Ethernet
connected PLC systems based on Siemens STEP7
®
. The communication connections
are static i.e. they are to be configured in a connection table.
n Siemens S7-300 communication functions
– By including the VIPA specific function blocks FB 8 ... FB 55 you get access to the
Siemens S7-300 communication functions.
Ä Chap. 5 ‘Include VIPA library’
page 69
n Siemens S7-400 communication functions
– To deploy the Siemens S7-400 communication functions the in the operating
system of the CPU integrated system function blocks SFB 8 ... SFB 23 should be
used. Here copy the interface description of the SFBs from the standard library at
system function block to the directory container, generate an instance data block
for each call and call the SFB with the associated instance data block.
Precondition for the Siemens S7 communication is a configured connection table, which
contains the defined connections for communication. For this e.g. WinPLC7 from VIPA or
NetPro from Siemens can be used. A communication connection is specified by a con-
nection ID for each connection partner. Use the local ID to initialize the FB/SFB in the
PLC from which the connection is regarded and the partner ID to configure the FB/SFB in
the partner PLC.
FB/SFB Designation Description
FB/SFB 8 USEND Uncoordinated data transmission
FB/SFB 9 URCV Uncoordinated data reception
FB/SFB 12 BSEND Sending data in blocks
FB/SFB 13 BRCV Receiving data in blocks
FB/SFB 14 GET Remote CPU read
FB/SFB 15 PUT Remote CPU write
FB 55 IP_CONF Programmed communication connections
Please use for the Siemens S7 communication exclusively the FB/SFBs
listed here. The direct call of the associated internal SFCs leads to errors
in the corresponding instance DB!
Possibilities of communi-
cation functions
Project engineering
Function blocks
VIPA SPEED7
Network Communication
Ethernet Communication > FB/SFB 8 - FB 55 - Overview
HB00 | OPL_SP7 | Operation list | en | 18-30 153