
VTK-VS-BA-015e-A | User Manual MDS 3200+ Series
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Communication Interfaces
55
7
COMMUNICATION INTERFACES
The MDC 3200
+
has three communication interfaces. There is a 9-pin serial interface, RS-
232C, a 15-pin PLC interface and an AUX socket.
7.1
Serial Interface RS-232C: 9-Pin Sub-D
The local interface is structured according to SCPI Standard. These “Standard Commands for
Programmable Instruments“ represent a standardized set of instructions used for control and
programming, transmitted in form of ASCII text. They can be generated by any selectable pro-
gramming language in any environment. The serial interface is operated by means of software
handshake. The hardware handshake communications are not in use.
INFORMATION! (Communication while triggering)
Do not send instructions through this interface in the course of a running dispensing cycle. Com-
munication is only possible between distinct sequences
(signal DosOK on “high”)
.
After sending data or parameters to the control unit you have to wait for the “OK” signal before
you can start further actions. Also you only can send data while the MDC is in the main menu.
7.1.1
Functions Allocated to the Different Pins
PIN
Characteristics
Level
Function
1
Reserved for future use
___________
___________
2
Input
TX
Serial transmission signal
3
Input
RX
Serial reception signal
4
Connected to PIN 6
5
Ground
Ground
6
Connected to PIN 4
7
___________
___________
___________
8
___________
___________
___________
9
___________
___________
___________
The MDC 3200
+
RS-232C log uses RS-232C Standard and is designed for communication via a se-
rial cable, connected 1:1, with a Sub-D nine pin connector.
The following parameter configuration is used for MDC 3200
+
communication:
•
Synchronous mode: Half-duplex
•
Bits/s : 9600 – 57600
(4 different options available)
•
Start bit: 1
•
String length: 8 bit
(ASCII)
•
Parity: None
•
Stop bit: 1
•
Log: None
Содержание MDS 3200+ Series
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