Parker SLVD7N - 11. Digital Inputs and Outputs Programming; 11.1. The pico-PLC

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Parker Hannifin S.p.A S.B.C. Division SLVDN User’s Manual

Page 121 of 181

11.PROGRAMMING DIGITAL INPUTS AND OUTPUTS

11.1. The pico-PLC

The internal pico-PLC is used to connect the external world (inputs/outputs) with the world of the

parameters of the SLVD-N. The PLC can be used to copy digital input to a binary parameter, to copy a

binary parameter to a digital output and to execute mathematical and Boolean operations. The PLC

program must be inserted as a list of instructions by using the keyboard or by the serial line using a PC

and an interface program. A PLC program (see Appendix F) written to meet the needs of a large

number of applications corresponds to the default parameters (b99.12). In most cases it is not

necessary to program the PLC itself. The main features of the pico-PLC are:

program steps 256

scanning time 6.144 ms

number of timers 2

number of instructions 15

stack depth 1

mathematical operations 16 / 32 bits

fast inputs 2 – (512 μs)

PLC PARAMETERS

Par. Description Field Range Def. Res.

Pr71

Constant value = -1. Double word.

R/W -32768÷+32767 -1 1

Pr72

Constant value = 0. Double word.

R/W -32768÷+32767 0 1

Pr73

Constant value = 1. Double word.

R/W -32768÷+32767 1 1

Pr74

Constant value = 2. Double word.

R/W -32768÷+32767 2 1

Pr75

Constant value = 10. Double word.

R/W -32768÷+32767 10 1

Pr76

Constant value = 100. Double word.

R/W -32768÷+32767 100 1

Pr77

Constant value = 1000. Double word.

R/W -32768÷+32767 1000 1

Pr78

Constant value = 1024. Double word.

R/W -32768÷+32767 1024 1

Pr79

Constant value = 4096. Double word.

R/W -32768÷+32767 4096 1

Pr80