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6.1 External Control and the External Input/Output (EXT I/O) Connector
External Control
Input Functions
• External trigger input (TRIG)
• Select Panel No. to load (
LOAD0 to LOAD4)
• Zero-adjust signal input (
0ADJ)
• Print Signal input (
PRINT)
• Self-calibration signal input (
CAL)
External Output
Terminal
Functions
• End-of-Conversion signal output (EOC)
• Reference signal output (INDEX)
• Measurement Fault signal output (ERR)
• Comparator decision signal output (Hi, IN, Lo)
• BIN signal outputs (BIN0 to BIN9)
*1
• BCD output (BCD1-0 to BCD6-3)
*1
• General-purpose outputs (OUT0 to OUT7)
*2
*1: BIN outputs and BCD outputs cannot both be used simultaneously.
*2: General-purpose outputs (OUT0 to OUT7) are not available when
the BCD outputs are selected.
External ControlChapter 6
6.1 External Control and the External Input/
Output (EXT I/O) Connector
To avoid electrical hazards, observe the following cautions:
• Turn off power to all devices before making connections. Make
sure connections are secure so that no wires can become
loose during operation and contact conductive parts such as
the chassis or test leads.
• Note that INT.GND is grounded. Therefore, if the controller has
electric potential relative to ground, a short-circuit hazard
exists which may cause an accident.
To avoid damage to the instrument, observe the following cautions:
• Do not apply voltage or current to the EXT I/O terminals that
exceeds their ratings.
• When driving relays, be sure to install diodes to absorb counter-
electromotive force.
• Be careful not to short-circuit INT.VCC to INT.GND.
• Always provide protective grounding for devices to be connected to
external input and output terminals.
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