105BCommunication processor
12.3 Point-to-Point (PtP) communication
S7-1200 Programmable controller
536
System Manual, 11/2011, A5E02486680-05
You can set up the initial static configuration of the port in the device configuration
properties, or just use the default values. You can execute the SEND_CFG instruction in
your program to change the configuration.
The SEND_CFG configuration changes are not permanently stored in the CPU. The
parameters configured in the device configuration are restored when the CPU transitions
from RUN to STOP mode and after a power cycle. See Configuring transmit (send)
Table 12- 11 Data types for the parameters
Parameter and type
Data type
Description
REQ
IN
Bool
Activate the configuration change on the rising edge of this input.. (Default
value: False)
PORT
IN
PORT
After you install and configure a CM or CB communication device, the port
identifier appears in the parameter helper drop-list available at the PORT
box connection. The assigned CM or CB port value is the device
configuration property "hardware identifier". The port symbolic name is
assigned in the "System constants" tab of the PLC tag table. (Default value:
0)
RTSONDLY
IN
UInt
Number of milliseconds to wait after enabling RTS before any Tx data
transmission occurs. This parameter is only valid when hardware flow
control is enabled. The valid range is 0 - 65535 ms. A value of 0 disables
the feature. (Default value: 0)
RTSOFFDLY
IN
UInt
Number of milliseconds to wait after the Tx data transmission occurs before
RTS is disabled: This parameter is only valid when hardware flow control is
enabled. The valid range is 0 - 65535 ms. A value of 0 disables the feature.
(Default value: 0)
BREAK
IN
UInt
This parameter specifies that a break will be sent upon the start of each
message for the specified number of bit times. The maximum is 65535 bit
times up to an eight second maximum. A value of 0 disables the feature.
(Default value: 12)
IDLELINE
IN
UInt
This parameter specifies that the line will remain idle for the specified
number of bit times before the start of each message. The maximum is
65535 bit times up to an eight second maximum. A value of 0 disables the
feature. (Default value: 12)
DONE
OUT
Bool
TRUE for one execution after the last request was completed with no error
ERROR
OUT
Bool
TRUE for one execution after the last request was completed with an error
STATUS
OUT
Word
Execution condition code (Default value: 0)
Table 12- 12 Condition codes
STATUS (W#16#....)
Description
80B0
Transmit interrupt configuration is not allowed. Contact customer suport.
80B1
Break time is greater than the maximum allowed value.
80B2
Idle time is greater than the maximum allowed value.