Communications Ports
USB
|
| Signal |
|
|
|
Pin# | Name | Type |
Description
1
2
3
4
5
VBUS
USB -
USB +
USB_ID Return
USB Bus Power I/O signals
I/O signals
Identifies A/B connector Ground
RS232/USB
| Signal |
| Description | |
Pin# | Name | Type | ||
| ||||
|
|
|
|
1
2
3
4
5
6
7
8
9
10
USB D-
USB D+
RXD
TXD
DTR
GND
DSR
RTS
CTS
VBUS
input
output
input
I/O signals I/O signals Receive Data Transmit Data
Data Terminal Ready- set high when printer is on.
Ground
Data Set Ready- low to high
Request To Send- set high when printer is ready to accept a command or data
Clear To Send from host USB Bus Power
continued
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