User`s manual

Unity 4650 User’s Manual
wegener.com 33 800034-01 Rev. A
2.4 Serial Port Configuration
Device
assignments
The U4650 has one external serial port. A “device” must be assigned once to
the serial port, but no “device” may be assigned more than once. In addition,
more than one device may be assigned at one time but only one device which
accepts input may be assigned. (If multiple devices are assigned to the serial
port, the port’s settings are controlled by the device with higher priority
according to the list below.) Device port assignment and device configuration
(see below) may be controlled only from the unit front panel and the network
may disable this capability. The possible devices are:
1.Terminal
2.Modem (“modem” being remote terminal via modem)
3.Local COMPEL

4.Auxiliary Data
5.Printer (including COMPEL

e-mail and reports)
Device
configurations
When a serial port configuration command is received, the specified configura-
tion is immediately stored for the specified device (e.g. for the “Terminal”
device). If a serial port is currently assigned another device, then its output
buffer is immediately flushed and the port re-configured. Communication is
fixed at 1 start, 1 stop, and 8 data bits, with no hardware handshaking. No pro-
vision for software handshaking is made in this Release. The serial port’s
behavior for each of its device types is described in the following table:
Table 6: Device Configurations
Device Serial Port Behavior (Italics are Programmable, Bold are Fixed)
Terminal Configured to
19.2k, N, 8, 1
. The unit responds to the terminal commands as
described in
3.4 Operation from Local/Remote Terminal
on
page 59.
Modem Configured to B, P,
8, 1
. The unit responds to the commands as described in
3.4 Operation from Local/Remote Terminal
on page 59.
Aux Data Configured to B, P,
8, 1
. This is an output only (all inputs ignored).
Local
COMPEL
Configured to B, P,
8, 1
. This is an input for testing only.
Printer Configured to B, P,
8, 1
. This is an output only.
The legal values for B are: 1200, 2400, 4800, 9600, 19.2k, or 38.4 kilobaud.
The legal values for P are: ‘O’, ‘E’, or ‘N’ for Odd, Even, or No parity.