AVG Automation 6" EZTouch I/O Flex, Manual, Page: 40 / 64

EZTouch I/O Flex
40 / 64
Please Note: Since the PLC Editor is a common programming platform for all the
models offered by the AVG PLC family, it may allow you to include 128 Inputs (I),
128 Output (O), 64 input Registers (IR) and 64 Output Registers (OR) in the main
logic. However, the TouchPLC Micro only physically supports 24 discrete inputs
and 16 discrete outputs; hence it is recommended that you only use I1-I24 and
O1-O16 while programming the Micro. Similarly, the TouchPLC Nano only
physically supports 16 inputs and 8 outputs; hence it is recommended that you
only use I1-I16 and O1-O8 while programming the Nano. The remaining O bits
may be used as "Scratch bits." Similarly, only IR1-IR4 and OR1-OR4 should be
used to address the I/O Registers, while the rest of the Output Registers may be
used as "Scratch Registers." Although there are 64 System Registers (SR) and 64
System Discretes (SD) available in the programming software, many of them are
preassigned a function.
Mapping Conventions
Discrete Inputs/Outputs
Discrete Inputs
Discrete Inputs are denoted using an “I” pre-fix (e.g. I1, I4, etc.). The maximum
number of physical Inputs available in an
EZTouch I/O Flex
with Micro is 24. Hence,
you may only use I1 – I24 in your main logic. Maximum number of physical
Inputs available in an
EZTouch I/O Flex
with Nano is 16. Hence, you may only use
I1 – I16 in your main logic. Discrete inputs are Read only type.
Note: All the discrete type EZ Inputs are mapped to Discrete Input bits. In the
example above, the output bit O1 will be turned on when input I1 allows power
through the rung.
Discrete Outputs
Discrete Outputs are denoted using an “O” pre-fix (e.g. O1, O4, etc.). The maximum
number of programmable Outputs available is 1 through 128. Although the number
of discrete physical outputs available in an
EZTouch I/O Flex
Micro is 16 and in an
EZTouch I/O Flex
Nano is 8, the remaining “O” registers can be used as ‘Scratchbits'
in the main logic. Discrete Outputs are Read-Write type.
Note: All the discrete type EZ Outputs are mapped to Discrete Outputs bits.
Word Inputs/Outputs
Input Register (Word)
Input Registers are denoted using an “IR” pre-fix (e.g. IR1, IR4, etc.). These are 16-bit