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Gpio Specifications - Hitachi HF-BX1000 Instruction Manual

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4.4.2 GPIO specifications

(1) GPIO specifications
Item
Input (*1)(*2)
Input type
Output (*2)
Out put type
Maximam current
(*1) This equipment's GPIO port is non-insulation. Be attention not to apply noises to GPIO
connector when you use GPIO port. Otherwise, this equipment may malfunction under
the influence of a noise etc.
(*2) GPIO signal is effective only in the period which this equipment has been running.
During the period until equipment starts, a signal outputs low-level. Make sure you use
open drain for output of user's circuit.
(2) Table of GPIO signals
Pin No.
Signal name
4
GENDO0
5
GENDO1
9
MCALL
6
GENDI0
7
GENDI1
8
RMTSHTDN
3
GND
1 and 2 -
Specification
5VTTL Level, non-insulation
(negative logic, include pull-up resister (5V,1kΩ))
Open drain output, non-insulation
(negative logic, include pull-up resister (5V,1kΩ))
DC 5V 5mA
Meansing
General-purpose output signals.
User can define the meaning of a signal for
every GENDO0~1 output. In addition,
a default output signal is high-level.
Maintenance demand signal.
This signal output low-level when the
equipment have a fan failure,
or a temperature failure.
Systems (CPU side) outputs a high level
during normal operation.
General-purpose input signals
User can define the meaning of a signal for
every GENDI0~1 input.
Signal width must be tailored to
the width(time) of user program. (*3)
Shoutdown demand signals.
OS will be shutdown when this signal is
low-level. Moreover, Low-level input
signal must be 1500ms or more. (*3)
Use this signal as reference voltage of TTL. -
Do not connect.
This equipment
+5V(sub-power) Pin No.:4 or 5 or 9
Signal
output
※For ①, refer to Figure 4-1.
This equipment
+5V(sub-power)
※For ①, refer to Figure 4-1.
-
4-17
4. SPECIFICATIONS
Diagram of connection
User's circuit
1kΩ
TTL level
receive
circuit
Pin No.:3 (GND)
Pin No.:6 or 7 or 8
User's circuit
1kΩ
Signal
input
Pin No.:3 (GND)

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