GFK-1911B
Chapter 8 Communications
8-9
8
DP/V1 Examples
The examples on the following pages show how objects on the NIU and the I/O
modules can be read and written.
Modules in the Examples
In this example, the VersaPoint I/O Station includes:
Slot 0: Profibus-DP NIU, IC220PBI002
Slot 1: 24V 8-Point Discrete Output Module IC220MDL753
Slot 2: 24V 8-Point Discrete Input Module, IC220MDL643
Slot 3: RS-232 Communications Module, IC220BEM232
Slot 4: Analog 2-Ch. Voltage/Current Input Module IC220ALG220
Slot 5: Analog 1-Ch. Voltage/Current Output Module, IC220ALG320
Object Dictionary of the RS-232 Communications Module
Index
(hex)
Data Type
Number of
Elements
Length
(bytes)
Meaning
Object
Name
Access
Permitted
5FC1 Variable
of
Unsigned 8
1 1
Module
start
indicator
START-IND read/write
5FE0 String
Variable of
Octet String
1 58
Transmit/
receive RS-
232 data
V24-DATA read/write
5FFF Array
of
Unsigned 8
20 1
Module
configuration
INIT-Table read/write
Example Object Description
The Object Description below is a write service that writes the INIT-TABLE object
to configure the RS-232 module.
Object
INIT-TABLE
Access
Read, write
Data Type
Array of Unsigned 8
Index
5FFF
hex
Subindex
00
hex
Write
all
elements
01
hex
Protocol
02
hex
Baud
rate
03
hex
data
width
04
hex
, 05
hex
Reserved
06
hex
Error
Pattern
07
hex
First
Delimiter
08
hex
Second
Delimiter
09
hex
3964R
Priority
0A
hex
Output
type
0B
hex
DTR control system
0C
hex
Rotation
switch/
0D
hex
XON
Pattern
0E
hex
XOFF
Pattern
0F
hex
to 14
hex
Reserved
Length
(bytes)
14
hex
Sunindex 00
hex
01
hex
Subindex 01
hex
to 14
hex
Data
VersaPoint RS-232 module configuration
Содержание VersaPoint IC220PBI002
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