Remote-processing RPC-2300 Manuel d'utilisateur télécharger pdf (Page 20)

DIGITAL LINES CHAPTER 6

Page 18 RPC-2300

High cur rent outputs at J3 port A are optionally

configurable as TTL I/O by replacing U20 with a DIP

shunt jumper. This keeps logic compatible with ports B

and C. If opto channels 8-15 are used as inputs, then

U20 must be replaced by a DIP shunt jumper.

Configuring digital I/O lines

Lines are configured during program execution using the

CONF IG PIO command. On power up or reset, all lines

are inputs.

When a line is configured as an output, it can sink a

maximum of 2. 5 mA at 0. 4V and can source a minimum

of 2.5 ma at 2. 4V. W hen driving opto modules, the

outputs sink 15 mA at 1.0V.

Digital I/ O prog ramm ing exam ple

The follow ing exam ple reads a switch at port A, bit 3

(J2-25), reads an opto module at channel 1 and writes an

opto module at channel 5. A LE D is controlled at J2-10

(port B, bit 0).

200 D = BIT(0,3) :'Read switch status, port A

210 F = OPTO(101) :'read opto module, ch. 1

220 OPTO 103,ON :'write module, channel 3

230 BIT 1,0,0 :'turn on led at J2-10

240 BIT 1,0,1 :'turn off led at J2-10

250 A = LINE(103) :'Reads pin 3 at J2

Conne ctor pin ou t - J2

Pin # 82C55 Description Opto

Channel

19 Port A, line 0 8

21 Port A, line 1 9

23 Port A, line 2 10

25 Port A, line 3 11

24 Port A, line 4 12

22 Port A, line 5 13

20 Port A, line 6 14

18 Port A, line 7 15

10 Port B, line 0 16

8 Port B, line 1 17

4 Port B, line 2 18

6 Port B, line 3 19

1 Port B, line 4 20

3 Port B, line 5 21

5 Port B, line 6 22

7 Port B, line 7 23

13 Port C, line 0 Lower C 0

16 Port C, line 1 Lower C 1

15 Port C, line 2 Lower C 2

17 Port C, line 3 Lower C 3

14 Port C, line 4 Upper C 4

11 Port C, line 5 Upper C 5

12 Port C, line 6 Upper C 6

9 Port C, line 7 Upper C 7

26 Ground

2 +5V

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 35 36

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Remote-processing RPC-2300 Manuel d'utilisateur Page 20

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