
E94AYCCA communication manual (CANopen®)
Process data transfer
Synchronisation of PDOs via sync telegram
54
L
EDS94AYCCA EN 5.0 - 06/2012
8.4.2
Effect of C01130 on the sync phase position
Example 1:
1
Sync cycle time (
= 2000
μ
s
Sync phase position (
= 0
μ
s
Sync application cycle (
= 1000
μ
s
A
Instant of acceptance/transmission of synchronous PDOs
B
Inactive instant of acceptance
n
Device cycle
Example 2:
1
Sync cycle time (
= 2000
μ
s
2
Sync phase position (
= 400
μ
s
Sync application cycle (
= 1000
μ
s
3
PDO delay
= (
-
+ 150
μ
s) modulo
= 750
μ
s
A
Instant of acceptance/transmission of synchronous PDOs
B
Inactive instant of acceptance
n
Device cycle
Example 3:
1
Sync cycle time (
= 2000
μ
s
2
Sync phase position (
= 400
μ
s
Sync application cycle (
= 2000
μ
s
3
PDO delay
= (
-
+ 150
μ
s) modulo
= 1750
μ
s
A
Instant of acceptance/transmission of synchronous PDOs
B
Inactive instant of acceptance
n
Device cycle
0
1
0
1
150 µs
n-1
1
150 µs
n
n+1
n+2
SYNC
SYNC
0
1
0
1
n+3
n-1
n
0
n+1
n+2
SYNC
SYNC
0
1
0
1
n+3
n-1
1
n
n+1
n+2
SYNC
SYNC