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Chapter 4 Serial communication
Manual VIPA System 200V
4-2
HB97E - CPU - RE_21x-2BS03 - Rev. 15/16
Fast introduction
The CPU 21x-2BS03 provide serial interfacing facilities between the
processes of different source and destination systems. The CPU has got 2
serial RS232 interfaces.
The communication happens via handling blocks that are stored in the CPU
as library.
The CPU supports the ASCII, STX/ETX, 3964(R) and RK512 protocols.
For the parameter transfer to the communication processor (CP), you have
to execute SEND (SFC 230) with order no. 201 during runtime. For this you
store the parameters in a DB where the structure depends on the wanted
protocol.
To activate the parameters, you execute a RESET (SFC 234) with order
no. 0 after the SEND.
Note!
Please regard that the commands SEND, RECEIVE, FETCH and RESET
require a preceding "RLO"=1 (
r
esult of
l
ogic
o
peration) otherwise they are
not executed.
The internal CP of the CPU 21x-2BS03 is directly connected to the CPU
part via a Dual-Port-RAM, also called "page frame". This page frame is
available at the CPU section as standard CP interface. The data transfer
happens via the standard handling blocks (SEND, RECEIVE and FETCH).
The communication via the according protocols is controlled by connection
commands that are programmed in the user application.
The following SFCs are used:
SFC
Name
Description
SFC 230
SEND
Send via page frame (page frame comm.)
SFC 231
RECEIVE
Receive via page frame (page frame comm.)
SFC 232
FETCH
Fetch via page frame (page frame comm.)
SFC 233
CONTROL
Control for page frame communication
SFC 234
RESET
Reset for page frame communication
SFC 235 SYNCHRON Synchron for page frame communication
SFC 236
SEND_ALL
Send_All via page frame (page frame comm.)
SFC 237
RECV_ALL
Receive_All via page frame (page frame com.)
General
Protocols
Parameterization
Communication
Содержание VIPA System 200V
Страница 1: ...VIPA System 200V CPU Manual HB97E_CPU RE_21x 2BS03 Rev 15 16 April 2015 ...
Страница 4: ...Contents Manual VIPA System 200V ii HB97E CPU RE_21x 2BS03 Rev 15 16 ...
Страница 8: ...Safety information Manual VIPA System 200V 4 HB97E CPU RE_21x 2BS03 Rev 15 16 ...
Страница 66: ...Chapter 3 Deployment CPU 21x 2BS03 Manual VIPA System 200V 3 28 HB97E CPU RE_21x 2BS03 Rev 15 16 ...