Programmable Relay

ZEN V2 Units

33

■ Memory Cassette and CPU Unit Combinations

Be aware of the following restrictions when using a Memory Cassette containing a program that was stored from a CPU Unit with a different version

of system software.

Note: 1. The display functions (display clear: -CD

@ and day/month display: DAT1) cannot be used and will be ignored.

2. Only the memory area ranges supported by the pre-V1 CPU Units can be used for Timers, Holding Timers, Counters, Weekly Timers, Calendar Timers, and

Displays (i.e., only half of each).

3. Only 6 inputs and 4 outputs can be used in the CPU Unit I/O bits. Any others will be ignored.

4. Twin timer operation for timers, multiple-day operation and pulse operation for weekly timers, the 8-digit counter, and 8-digit comparators cannot be used.

New Zealand and Australia cannot be set for Daylight Saving Time (DST).

■ Support Software and CPU Unit Combinations

Note: 1. The display functions (display clear: -CD

@ and day/month display: DAT1) cannot be used and will be ignored.

2. Only the memory area ranges supported by the pre-V1 CPU Units can be used for Timers, Holding Timers, Counters, Weekly Timers, Calendar Timers, and

Displays (i.e., only half of each).

3. Twin timer operation for timers, multiple-day operation and pulse operation for weekly timers, the 8-digit counter, and 8-digit comparators cannot be used.

New Zealand and Australia cannot be set for Daylight Saving Time (DST).

■ Difference between ZEN Programmable Relays and PLC Ladder

Program Execution

ZEN Programmable Relays

The ON/OFF status produced by an output contact will not be used

as the input contact status in the same cycle, but it can be used in

the next cycle.

OMRON SYSMAC PLCs

When the following instructions are executed, Q0 turns ON/OFF

at the same time as the other bits.

System software version

of CPU Unit used to write

the Memory Cassette

System software version of CPU Unit used to read the Memory Cassette

Ver. 1.0

Ver. 1.1

Ver. 2.0 (V1 CPU Units)

Ver. 3.0 (V2 CPU Units)

10 I/O points

20 I/O points

10 I/O points

20 I/O points

Ver. 1.0OKOKOK

OK

OK

OK

Ver. 1.1

Restrictions (See note

1.)

OK

OK

OK

OK

OK

Ver. 2.0

(V1 CPU

Units)

10 I/O points Restrictions

(See notes 1 and 2.)

Restrictions

(See note 2.)

OK

OK

OK

OK

20 I/O points Restrictions

(See notes 1, 2, and 3.)

Restrictions

(See notes 2 and 3.)

Restrictions

(See note 3.)

OK

Restrictions

(See note 3.)

OK

Ver. 3.0

(V2 CPU

Units)

10 I/O points Restrictions

(See notes 1, 2, and 4.)

Restrictions

(See notes 2 and 4.)

Restrictions

(See note 4.)

Restrictions

(See note 4.)

OK

OK

20 I/O points Restrictions

(See notes 1 to 4.)

Restrictions

(See notes 2, 3, and 4.)

Restrictions

(See note 4.)

Restrictions

(See note 4.)

Restrictions

(See note 3.)

OK

CPU Unit system software

Support Software

Ver. 1.0

ZEN-SOFT01

Ver. 2.0

ZEN-SOFT01-V2

Ver. 3.0

ZEN-SOFT01-V3

Ver. 4.1

ZEN-SOFT01-V4

Ver. 1.0 (Pre-V1 Units)

OK

OK

Restrictions

(See notes 1 and 2.)

Restrictions

(See notes 1, 2, and 3.)

Ver. 1.1 (Pre-V1 Units)

Restrictions

(See note 1.)

OK

Restrictions

(See note 2.)

Restrictions

(See notes 2 and 3.)

Ver. 2.0 (V1 CPU Units)

10 I/O points Restrictions

(See notes 1 and 2.)

Restrictions

(See note 2.)

OK

Restrictions

(See note 3.)

20 I/O points Not applicable.

Not applicable.

OK

Restrictions (See note 3.)

Ver. 3.0 (V2 CPU Units)

Not applicable.

Not applicable.

Not applicable.

OK

0

1

2

3

4

I0

Bus bar

Executed sequentially

from the bus bar.

I1

I2

[ Q0

[ Q1

TT0

[ Q2

Q0

I3

I4

T0

ZEN executes the entire

ladder program (up to 96

lines) from the first to last line

at one time. Each row is

executed in order from left to

right starting from the left bus

bar.

1 cycle

1 cycle

0

1

I0

M0

Q0

I0

[ M0

[ Q0

M0

0

1

2

3

4

I0

END

I1

I2

[ Q0

[ Q1

TT0

[ Q2

Q0

I3

I4

T0

PLCs execute ladder

programs one rung (circuit) at

a time, starting with the top

rung and executing it in order

from the left. When the END

instruction is reached, the

program is executed again

from the first rung.

0

1

I0

M0

Q0

I0

[ M0

[ Q0

M0