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2-1-1 CPU Unit Indicators
CPU Unit indicators provide visual information on the general operation of the
PC. Although not substitutes for proper error programming using the flags and
other error indicators provided in the data areas of memory, these indicators pro-
vide ready confirmation of proper operation.
Indicator Meaning
RUN (green) Lit when the PC is operating normally.
ERR (red) Flashes if the PC detects any non-fatal error in operation. The PC
will continue operating.
Lit if the PC detects any fatal error in operation. The PC will stop
operating. After the PC stops operating, the RUN indicator will be
OFF and all output signals of the Output Units will be interrupted
(turned OFF).
INH (orange) Lit when the Load OFF flag (AR bit) is ON, in which case all
output signals of the Output Units will be interrupted (turned
OFF).
COMM
(orange)
Flashes when the CPU Unit is communicating with the device
connected to the peripheral port or RS-232C port.
2-1-2 Peripheral Device Connection
A Programming Console or IBM PC/AT running SSS can be used to program
and monitor the C200HX/HG/HE PCs.
Programming Console A C200H-PR027-E or CQM1-PRO01-E Programming Console can be con-
nected as shown in the diagram. The C200H-PR027-E is connected via the
C200H-CN222 or C200H-CN422 Programming Console Connecting Cable,
which must be purchased separately. A Connecting Cable is provided with the
CQM1-PRO01-E.
Data Access Console A C200H-DAC01 Data Access Console can be connected via the C200H-
CN222 or C200H-CN422 Programming Console Connecting Cable, which must
be purchased separately. The following operations are not available when the
C200H-DAC01 is used with the C200HX/HG/HE:
Set value read and change
Error message display
CPU Unit Components Section 2-1