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DOK-CONTRL-S67S3BKDI8*-AP03-EN-P
Rexroth IndraControl S67 Sercos Coupler 8 Digital Inputs (M8)
9.6.3
Extended Operation Mode (ENHANCED)
General information
Cycle time
Please note that the following parameters can be influence the
Sercos cycle time:
●
Number of the Sercos slaves in the network and also the
●
Number and order of the MDT/AT telegrams
●
Node structure and type of the I/O modules at the S-BUS
●
S-BUS cable length
In the standard operation mode, the connection cycle time t
S-0-1050.x.10 "Producer Cycle Time" (see
nection Configuration (SCP_VarCFG)" on page
connections are to be the same as the configured communication cycle time
tScyc. Otherwise, the configuration is rejected with command S-0-0127.
The extended "ENHANCED" operation mode is to be manually switched on
by the user in CP2. When performing a power-on-reset or changing into com‐
munication phase CP0/NRT, the standard operation mode is automatically
reactive so that the "ENHANCED" operation mode is to be reactivated each
time it is powered up again.
In this operation mode, the input and output data and the S-BUS operate at a
clock-reduced rate compared to the Sercos communication cycle. This allows
the configuration of a shorter cycle time t
The processing of the command values (output data) starts immediately after
the transmission of the MDT telegrams to the field bus, but only in each n-th
communication cycle (t
Scyc
plies to configurations with command values in the AT telegram t
for recording of actual values/output of command values is only after the
transmission of the AT telegrams) in which the processing of the command
values initially starts with t
sercos III Communication Cycle (reduced clock 1:2, t
t
Scyc
MDT
t
4
sercos III Communication Cycle (reduced clock 1:2, t
t
Scyc
MDT
AT
t
1
Fig. 9-8:
Processing times for inputs and outputs in the clock-reduced commu‐
nication cycle n· t
Bosch Rexroth AG
chapter "Profile for Variable Con‐
65) configured for the Sercos
on the bus.
Scyc
). In this operation mode, the special rule also ap‐
(see the following figure):
1
t
Pcyc
AT
MDT
t
t
/ t
1
OSP
ISP
t
Pcyc
MDT
AT
t
t
/ t
t
4
OSP
ISP
1
Scyc
101/139
Sercos
(IDN/
Pcyc
> t
(time
4
1
> t
)
1
4
t
Scyc
AT
t
t
4
1
< t
)
1
4
t
Scyc
t
4
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