Configuring The Communication Ports - Siemens SIMATIC S7 System Manual

Table 12- 33 Condition codes
STATUS (W#16#....)
80F0
80F1
80F2
80F3
12.3.2

Configuring the communication ports

The communication interfaces can be configured by two methods:
● Use the device configuration in STEP 7 to configure the port parameters (baud and
● Use the PORT_CFG (Page 534), SEND_CFG (Page 535) and RCV_CFG (Page 537)
After configuring the hardware devices (Page 109), you configure parameters for the
communication interfaces by selecting one of the CMs in your rack or the CB, if configured.
Except for flow control, which only the CM 1241 RS232 supports, the port configuration
parameters are the same regardless of whether you are configuring an RS232 or an RS485
communication module or the RS485 communication board. The parameter values can
differ.
S7-1200 Programmable controller
System Manual, 11/2011, A5E02486680-05
Description
CM or CB is RS485 and no signals can be set
Signals cannot be set because of Hardware flow control
Cannot set DSR because module is DTE
Cannot set DTR because module is DCE
parity), the send parameters and the receive parameters. The device configuration
settings are stored in the CPU. These settings are applied after a power cycle and a RUN
to STOP transition.
instructions to set the parameters. The port settings set by the instructions are valid while
the CPU is in RUN mode. The port settings revert to the device configuration settings
after a STOP transition or power cycle.
105BCommunication processor
12.3 Point-to-Point (PtP) communication
The "Properties" tab of the inspector window
displays the parameters of the selected CM or
CB. Select "Port configuration" to edit the
following parameters:
 Baud rate
 Parity
 Number of stop bits
 Flow control (RS232 only)
 Wait time
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