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2-1
Section
Amplifiers
15
Signal Functions
Signal
Name
Function
ID0 to ID15
Data Input
Input write data to the Data Carrier.
OD0 to OD15
Data Output
Output read data from the Data Carrier. The data indicator is lit during
output.
EXT OD 16 to 23
Extension Data Output
Output read data from the Data Carrier. There is no data indicator for
these outputs.
ADDR0 to ADDR7
Address Input
Specify start address for reading or writing.
INHIBIT/TRG
INHIBIT Input/Trigger
Input
Inputs the INHIBIT signal when in AUTO mode.
INHIBIT signal 0: No communication with the Data Carrier.
INHIBIT signal 1: Communication with the Data Carrier.
Inputs the TRG signal when in SYNC mode.
When the TRG signal is input, communication with the Data Carrier will
start.
READ/WRITE
R/W Switching Input
Switches between READ and WRITE.
When this bit is OFF (0), data is read from the Data Carrier.
When this bit is ON (1), data is written to the Data Carrier.
WT_MODE1
Write Mode 1 Input
Switches between bytes and bits for WRITE operations.
When this bit is OFF (0), data is written in byte units.
When this bit is ON (1), data is written in bit units.
WT_MODE2
Write Mode 2 Input
Switches between BIT SET and BIT CLEAR for WRITE operations.
When this bit is OFF (0), BIT SET is performed.
When this bit is ON (1), BIT CLEAR is performed.
WT_BYTE
16/8 Bit Switching Input
Switches between 16-bit and 8-bit data for WRITE operations.
When this bit is OFF (0), 16-bit data is written to the Data Carrier.
When this bit is ON (1), 8-bit data is written to the Data Carrier.
WT_AREA
Write Area Input
Switches between ID0 to ID7 and ID8 to ID15 for 8-bit WRITE BYTE
operations.
When this bit is OFF (0), the data in ID0 to ID7 is written to the Data
Carrier.
When this bit is ON (1), the data in ID8 to ID15 is written to the Data
Carrier.
HS
HS Output
Controls INHIBIT/TRG input signal handshaking. Becomes “1” when
INHIBIT/TRG input is received, and “0” when cleared. The response
time depends on network conditions (baud rate, number of nodes,
Master settings, etc.). Create a program so that the host device waits
for this signal to turn ON before clearing the INHIBIT/TRG input.
NORMAL
Normal Output
This signal is output when communications with the Data Carrier are
completed normally for READ or WRITE operations. For READ
operations, read the data in OD0 to OD15 and EXT OD16 to EXT
OD23 with the rising edge of this signal.
ERROR
Error Output
This signal is output when communications with the Data Carrier are
not completed normally for READ or WRITE operations.
Caution
Be sure to observe the following precautions.
Note
1. Power Supply Voltage
Do not use an AC (100 VAC) power supply or any voltage exceeding the
rated voltage. Unsuitable power supplies may cause the equipment to ex-
plode or burn.
2. Load Short-circuiting
Do not short-circuit the load or connect it to the power supply. Doing either of
these may cause the equipment to explode or burn.
3. Wiring
Be careful not to make wiring mistakes such as reversing the polarity of the
power supply. Wiring mistakes may cause the equipment to explode or
burn.