Wieland samos PRO Manual page 57

"Output data (to PLC)" section
Register
Heartbeat interval (ms)
Register range
"Input data (from PLC)" section
Selection list 1
Selection list 2
Data set column
Register column
Column heartbeat interval
"Modbus mode" section
PLC IP address
Device ID
Maximum refresh time for PLC
 Combine samosPLAN 6 with the samosPRO system and transmit the configuration.
More detailed information on the link to the controls: Software manual, chapter "Connecting to
the safety controller"
Write to the PLC
NOTICE
The following restrictions apply when the gateway operates as a master and writes the input data
sets to the PLC:
• The address of the input data sets (preset in samosPLAN 6 ) must be the same as defined in the
PLC.
Wieland Electric GmbH | BA000970 | 07/2019 [9855]
Define from and to where in the PLC memory the selected
data should be read and written.
Defines how often the data sets are to be updated.
Requirement: You have selected the option Activate heart-
beat interval (see above).
Shows the registers in the PLC to which the process data is
written.
Set automatically: Determines the transmission method.
Value required for master mode:
samosPRO reads (Master)
Defines which of the two modbus commands is used:
• Read holding registers:
Activates the Read holding registers command (see
"Module commands" table below).
• Read input registers:
Activates the Read input registers command (see "Mo-
dule commands" table below).
Determines which data are to be written to the PLC or read
from it.
Mark the control boxes for the desired data sets for this pur-
pose.
You will find a detailed description of the data sets here:
Data transferred to the network (network input data sets) [ch.
3.2, p. 19]
Define from and to where in the PLC memory the selected
data should be read and written.
Defines how often the data sets are to be updated.
The parameters define from and to where the data in the
Modbus-TCP network are to be read and written:
Define the maximum rate (or the minimum time interval) for
transmitting the data sets to the PLC. This setting depends
on the processing speed of the PLC. Minimum = 10 ms, ma-
ximum = 65535 ms. The basic setting of 40 ms is suitable for
most PLC
Note: When these values are greater than the heartbeat in-
terval, the heartbeat interval will be slowed down to this
value.
Modbus TCP gateway
57