Table 1-5 Host Connector Pin Assignments - Microscan MS-3000 User Manual

Chapter 1 Setup and Installation
Pin Function
1
Chassis ground
2
Transmit data
3
Receive data
4
Request-to-send
5
Clear-to-send
6
TTL 5V signal
7
Signal Ground
8
TTL 5V signal
9 +5 VDC
10 Trigger input
11 Default (reset)
12 Aux Input
13 RXD +
14 TXD –
16 RXD –
19
TXD +
20 +12 VDC
21
Profile Card Input
22
Signal Ground
23
–12 VDC
24
+12 VDC
25
Match Code
a. The default communications mode does not support pin 4 (RTS). If RTS is not required by
the host port, pin 4 should not be wired as the results will be unpredictable.
A good read will cause a 5V signal (high or low) to be output to pin 6. A
noread will cause a 5V signal (high or low) to be output to pin 8.
Caution: There must be ±12V present before the decoder will transmit data to
the host. However, the decoder can receive commands without the presence
of either voltage.
1-8
MS-3000 Single Head Decoder User's Manual

Table 1-5 Host Connector Pin Assignments

Comment
connected to dc ground
+12v data output from the decoder
±12v signal indicating data from the host to the
decoder
±12v signal asserted high by the decoder when it
has data to send to the host
±12v signal asserted low by the host to stop the
decoder from sending data to it (data transmission
will resume when the signal is asserted high.)
indicates a good read
connected to chassis ground
indicates a noread
auxiliary supply
+0 VDC to +24 VDC
resets decoder to default
configuration
(future use)
RS-422/485
RS-422/485
RS-422/485
RS-422/485
data terminal ready (asserted high on power-up to
indicate decoder is on)
next label read as master label, if enabled
a