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Message:
Meaning:
: CHECK 8
Check the RS-232C Interface for
proper connection or possible
recharging.
NEW0?
Check the system for proper con-
nection or possible recharging.
: CHECK 68
RS-232C and Printer/Plotter/
Dual Cassette Interface battery
packs are low.
ERROR
5(,1
Low power during BASIC pro-
gramming.
LOW BATTERY
Low power during Terminal
Mode operation.
Table 1
When one of the above messages is displayed, recharge the
battery pack.
Using AC Power
To use the RS-232C Interface with AC power, connect
the Adapter (See "Powering-up the PC-2 RS-232C Inter-
face") and turn the power on.
Once connected to the PC-2 and powered up, the power
to the RS-232C Interface can be controlled by the
Computer.
• After turning the RS-232C's power ON, turn the PC-2
ON. (: CHECK 8 will be displayed if you don't follow
this order.) Power is then supplied to the unit.
• When you turn the PC-2 off, the RS-232C power is also
turned OFF.
• When not using the RS-232C Interface, set the unit's
power switch to OFF.
10
3/ Using the PC-2 RS-232C
Interface
The RS-232C Interface has its own set of commands and
functions ("software") which control data communica-
tions with other devices.
However, the execution of
commands and functions will not be successful unless
"hardware" is properly configured.
Specifically, this means that the input signals:
• CTS (Clear To Send)
• CD (Carrier Detect)
•
DSR (Data Set Ready)
must all be "ready."
•
Use the INSTAT command (described later) to check
the status of these signals.
•
Use the output signals commands RTS and DTR to tell
the status of Interface to the other device, are OFF at
initial power on. (See OUTSTAT.)
Important Note: The PC-2 must always be connected to
the Interface
when programming with the RS-232C
commands and functions.
Also, the Interface must be
connected to the PC-2 when you list or execute such
programs; otherwise, an error message or - (tilde) will
be displayed.
The
RS-232C
Interface provides extensions to PC-2
BASIC as well as a smart terminal program in ROM.
These new commands fall into four general categories:
• Control statements for the RS-232C hardware.
This
group allows you to configure the RS-232C hardware
and built-in terminal software for communication with
various devices.
11
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