Connecting SP80 / SP80H to IU80 and OEM counter card

Connecting SP80 to IU80 and OEM counter card

 

Key

Description

1

SP80 / SP80H probe (shown for mounting to CMM via KM80)

2

PL157 - SP80 to Lemo adaptor cable

3

PLM6 / 7 / 8 / 9 - standard machine cable

4

IU80 interpolator box

5

PL156 - IU80 output cable to OEM counter card (supplied unterminated)

The output of the IU80 can be connected directly to the CMM controller using an unterminated PL156 cable.

NOTE: The IU80 RESET function (pin 3 below) is only available with IU80s manufactured to version 3 and above.

IU80 output 26-way HDDSignalElectrical characteristicsColour
 1

X DigA

EIA-422A

Red

 2  

N/C 

3

RESET

TTL

White / blue

4

ERROR

TTL

Blue

5  

N/C

6

Z DigB

EIA-422A

 
7  

N/C

8

Probe Present

TTL

Yellow / blue

9

Green_LED_OFF

TTL

Yellow

10

Red_LED_ON

TTL

White

11

X DigA

EIA-422A

Black

12

X DigB

EIA-422A

Brown

13

X DigB

EIA-422A

Violet

14

Y DigA

EIA-422A

Orange

15

Y DigA

EIA-422A

Pink

16

Y DigB

EIA-422A

Turquoise

17

Y DigB

EIA-422A

Grey

18

0 V

 

N/C

19  

N/C

20

Z DigA

EIA-422A

Red / blue

21

Z DigA

EIA-422A

Green / red

22

Z DigB

EIA-422A

Yellow / red

23

+9 V to +18 V

300 mA max

White / red

24

+5 V

1 A max

Red / black

25

0 V

 

Red / brown

26

N/C

 

N/C

Shell

Screen

 

Screen

Probe and IU80 power supply

The IU80 must be provided with two power supplies.

+9 V to +18 V @ 300 mA max to supply the SP80 probe and

+4.75 V to 5.25 V @ 1 A max to supply the IU80.

Power must originate from either the OEM's controller or from a Renishaw CC6 counter card.

IU80 output signal format

The signals produced by IU80 are in EIA-422-A differential square wave format and in quadrature for each probe axis. The sign definition for the signals is a positive count when DigA leads DigB.

SP80 direction of travel 

The IU80 provides a minimum edge separation of 90 ns between any of the edges of a pair of quadrature signals.