VIPA SPEED7 CPU 313SCDPM - Deployment of RS485 Interface for Ptp

n In opposite to ASCII and STX/ETX, the protocols 3964R, USS and
Modbus require the acknowledgement of the partner.
n An additional call of the FC/SFC 217 SER_SND causes a return
value in RetVal that includes among others recent information
about the acknowledgement of the partner.
n Further on for USS and Modbus after a SER_SND the acknowl-
edgement telegram must be evaluated by a call of the FC/SFC
218 SER_RCV.
7.3 Deployment of RS485 interface for PtP
Per default, the RS485 interface X3 of the CPU is used for the
PROFIBUS DP master. Via hardware configuration the RS485 inter-
faces may be switched to point-to-point communication via the
Parameter Function RS485 X3 of the Properties.
Since the VIPA specific CPU parameters may be set, the installation
of the SPEEDBUS.GSD from VIPA in the hardware catalog is neces-
sary. The CPU may be configured in a PROFIBUS master system
and the appropriate parameters may be set after installation.
Switch to PtP operation
Requirements
VIPA System 300SDeployment PtP communication
Deployment of RS485 interface for PtP
HB140 | CPU-SC | 313-6CF13 | GB | 15-50 150