Process data mode

CB1.7

RegAccess

0_bin

Register communication off (process data mode)

CB1.6

-

reserved

CB1.5

RS_CNT_LAT*

1_bin

The counter is set to zero by an active edge at the latch input. Bits CB1.4, CB1.3 and CB1.0 specify which edge of the latch signal is active.

CB1.4

EnLatchFall*

1_bin

The falling edge of the latch input is active. The counter value is stored in the latch register at the first external latch impulse after the EnLatchFall bit becomes true. The subsequent pulses do not have any effect on the latch register.

CB1.3

EnLatchRise*

1_bin

The rising edge of the latch input is active. The counter value is stored in the latch register on the first external latch pulse after the EnLatchRise bit becomes true (this has priority over EnLatchFall). The subsequent pulses do not have any effect on the latch register.

CB1.2

SetCnt

A rising edge at SetCnt will set the counter to the 32 bit value that is written by the controller into the process output data.

CB1.1

ReadLatch

0_bin

The current value of the 32 bit counter is mapped to the process input data.

1_bin

The 32 bit value stored in the latch counter is mapped to the process input data.

CB1.0

EnLatchC*

1_bin

The rising edge of the zero input (input C) is active. The counter value is stored in the latch register at the first external latch impulse after the EnLatchC bit becomes true. The subsequent pulses do not have any effect on the latch register. (see note below)

SB1.7

RegAccess

0_bin

Acknowledgement for process data mode

SB1.6

-

reserved

SB1.5

-

reserved

SB1.4

StGate

KL5151-0000: Status of the external gate/latch input

KL5152-0000 (KL5151-0050): reserved

SB1.3

StLatchC

KL5151-0000: Status of the zero input (input C)

KL5152-0000 (KL5151-0050): reserved

SB1.2

SetCnt

Acknowledgement that the data for setting the counter has been adopted by the terminal.

SB1.1

ReadLatch

0_bin

The current value of the 32 bit counter has been mapped to the process data.

1_bin

The 32 bit value stored in the latch counter has been mapped to the process data.

SB1.0

ValLatchC*

1_bin

A zero-point latch has occurred: a rising edge at the zero input (input C) has caused the current counter value to be stored in the latch register as a reference mark.
Subsequent pulses do not have any effect on the latch register. To reactivate the gate/latch input you must:

• set bit 0 (EnLatchC) in the control byte to 0_bin.
• wait until this change has been acknowledged by resetting bit 0 (ValLatchC) in the status byte.
• set bit 0 (EnLatchC) in the control byte to 1_bin again.