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6. The SPEL+ Language
6.18 Input and output control
6.18.1 Hardware I/O
There are 24 DC inputs and 16 DC outputs on a standard controller. 8 inputs and 8 outputs
are assigned to remote function. However, these inputs and outputs can be reset and be
used as standard I/O. By purchasing I/O boards, you can add additional 128 inputs and
128 outputs. You can also add Fieldbus I/O option that allows the controller to function as
a Fieldbus slave. See I/O Systems chapter for details.
6.18.2 Memory I/O
There are 32 bytes (256 bits) of memory I/O. Memory I/O is especially useful for
synchronizing multi-tasking. Each memory bit can be treated as both an input and an
output.
Use the commands with the "Mem" prefix for memory I/O.
6.18.3 I/O Commands
Command Description
In
Reads one byte (eight bits) of input data.
InW
Reads one word (sixteen bits) of input data.
MemIn
Reads one byte (eight bits) of Memory I/O.
MemInW
Reads one word (sixteen bits) of Memory I/O.
MemOff
Turns off one Memory I/O bit.
MemOn
Turns on one Memory I/O bit.
MemSw
Read status of one bit of memory I/O.
Off
Turns off one output bit.
On
Turns on one output bit.
Out
Sets/reads one byte (eight bits) of output data.
OutW
Sets/reads one word (sixteen bits) of output data.
Oport
Reads the status of one output bit.
InBCD
Reads one byte of input data in BCD (binary coded decimal) format.
OpBCD
Outputs one byte of output data in BCD format.
Sw
Read status of one bit of hardware inputs or memory inputs.
EPSON RC+ 5.0 (Ver.5.4) User's Guide Rev.4 181
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