Released Rev. C 2000-1252-01 Page 29
VersaPort 2200 Technical Manual
Chapter 2: Theory of Operation
VersaPort Components
a
• ASCII Host Port
The ASCII Host port interface is used with ASCII terminal communications.
• Microstation Controller (MSC) Port
The MSC, if connected to the VersaPort, will keep track of product lots through the
Smart-Tag. The MSC serial port connects the Probe (Tag reader) on the
VersaPort port assembly to the Host processor via the MSC/Smart-Comm/Link
Manager.
NOTE . . .
1. SERIAL CABLES MUST BE WIRED AS NULL-MODEM CABLES.
2. C
ABLES CANNOT BE DAISY-CHAINED.
3. I
F A 5-WIRE CABLE IS USED FOR HOST CONTROL ONLY (NO SMART TAG
READ/WRITE), THEN THE CTS LINE MUST NOT BE ACTIVE. THE VERSAPORT
WILL INTERPRET A SIGNAL ON THE CTS LINE AS INDICATING TAG DATA BEING
SENT.
Parallel Communications Interface
The parallel I/O communication interface supports a single mode of operation: OPEN and
CLOSE.
The OPEN function opens the Pod and raises the port plate to a fixed stage position. The
CLOSE function returns the port plate/Pod top to the Home position.
T
ABLE 2 Serial Port Pin Usage
Pin
Number
Name
Serial Comm (SECS/ASCII)
without Tag.
Serial Comm (SECS/ASCII)
with Tag, or Tag only.
1 (N/C) not used not used
2 RX X X
3 TX X X
4 (N/C) not used not used
5 Ground X X
6 (N/C) not used not used
7 RTS not used X
8 CTS not used X
9 (N/C) not used not used
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