Parker Products COMPAX-M /-S (L) User Manual
Operating Instructions
COMPAX-M / -S
Process coupling using HEDA (Option A1 / A4)
168
8.6.4 Process coupling using HEDA (Option A1 / A4)
HEDA (SSI interface) can be used for synchronization of several axes with
simultaneous (
simultaneous (
±
2.5 µs) processing of individual controller time slices.
The master (operating mode 1) transmits 2 synchronization words to the slave
axes, enabling them to synchronize. The slave axes (operating mode 2)
synchronize automatically. No response is transmitted from the slave axes to the
master.
The master only transmits to axis address 1. Therefore, all slaves must also be set
to address 1 (P250=1).
axes, enabling them to synchronize. The slave axes (operating mode 2)
synchronize automatically. No response is transmitted from the slave axes to the
master.
The master only transmits to axis address 1. Therefore, all slaves must also be set
to address 1 (P250=1).
Acyclic communication between master and slave is not possible.
COMPAX XX00 as slave to transmit "Fast start" or as master
COMPAX XX60 as master or slave not when P212=3 and P212=4
COMPAX XX70 as master or slave only when P31=9 or 0
COMPAX XX60 as master or slave not when P212=3 and P212=4
COMPAX XX70 as master or slave only when P31=9 or 0
Max. 16 participants in the master/passive slave operating mode and max. 50m
cable length.
cable length.
The units must be fitted with the O1 / A4 (COMPAX 1000SL) option. There must be
a terminating connector bus 2/01 on the last slave.
a terminating connector bus 2/01 on the last slave.
Parameter
No.
No.
Meaning
Valid
from
from
Default
value
value
P243
HEDA operating mode
VP
0
P245*
Assgn outputs O1 ... O8 to the HEDA bus
imme-
diately
diately
0
P246*
Assgn outputs O9 ... O16 to the HEDA bus
imme-
diately
diately
0
P247
Max. average transmission errors
VP
5
P248
Max. transmission errors
VP
15
P249
Synchronization monitoring
VP
10
P250
Unit addresses (in master – slave mode =1)
VP
0
*In the HEDA master - HEDA slave operating mode (passive slave to COMPAX
master), P245=P246=0 is set.
master), P245=P246=0 is set.
No
.
.
P243
P250
Operating
mode
mode
Description
0
Not
relevant
relevant
= 0
Independent
single axis
single axis
No coupling, no synchronization
0
0
= 1 ... 9 Slave on IPM
via HEDA
Coupled operation and acyclic
communication possible via HEDA
communication possible via HEDA
1
Bit
0="1"
0="1"
(P243=1)
= 1
COMPAX as
master
master
Master axis transmits synchronous
word and 7 words to address 1
word and 7 words to address 1
2
Bit
1="1"
1="1"
(P243=2)
= 1
Passive slave
to COMPAX
master
to COMPAX
master
Slave receives at address 1 (P250=1),
but does not send anything back
but does not send anything back
Note!
If HEDA coupling is activated and the master executes "Find machine zero",
this will result in a positional offset between master and slave.
You should therefore execute machine zero travel when the HEDA coupling
is deactivated.
this will result in a positional offset between master and slave.
You should therefore execute machine zero travel when the HEDA coupling
is deactivated.
39
The interpolation module IPM can also be used as a master, but only with
COMPAX XX00; COMPAX XX60, COMPAX XX70
Synchronization
and fast start via
HEDA:
and fast start via
HEDA:
Variant support:
Physical limits:
Hardware
requirements:
requirements:
HEDA
parameters:
parameters:
Operating modes: