epc120

5. Parameter Setting Registers 0/16

Parameter

Name

Register No.

Bit No.

Function

RAM

ROM

FUSEBIT

0

16

0

This bit will automatically be set when register 16 is programmed.

0

Values

0

Register 16 is not

programmed

1

Register 16 is programmed

POL

0

16

1

Polarity of the LED pulse. Setting is depending on the LED driver circuitry.

1

Values

Default Setting

0

active low

X

1

active high

TPULSE

0

16

4..2

Pulse length of the light pulse. Setting is dependent on the LED type, the LED current, the

required response time of the system, the scan rate, the operating range, the lens, etc.

4

3

2

Values

Default

Setting

Recommended Setting

0

0

0

1μs

X

0

0

1

2μs

0

1

0

3μs

0

1

1

4μs

1

0

0

5μs

X (typical setting)

1

0

1

6μs

1

1

0

7μs

1

1

1

8μs

n/a

0

16

5

no function, must be set to “0”

TSTMP

0

16

8..6

Time stamp. The LED pulse is generates in the middle of the time stamp range.

8

7

6

Values

Default Setting

Recommended Setting

0

0

0

30μs

X

This parameter should be set to the same length as the

receive window length, given by the scanning time by

the microcontroller. I.e., if the time between the SCAN

commands issued by the micro processor is 60μs, this

parameter should be set to 60μs.

0

0

1

60μs

0

1

0

90μs

0

1

1

120μs

1

0

0

150μs

1

0

1

180μs

1

1

0

210μs

1

1

1

240μs

DRATE

0

16

10..9

Data rate on the 2-wire bus

10

9

Values

Default Setting

Recommended Setting

0

0

250 kbit/s

X

if the physical 2-wire bus length is up to 100 meters

0

1

500 kbit/s

1

0

1 Mbit/s

1

1

2 Mbit/s

if the physical 2-wire bus length is less than 3 meters

...continued on next page...

© 2011 ESPROS Photonics Corporation

Characteristics subject to change without notice

12

Datasheet epc12x - V2.1

www.espros.ch