4. Configuration
62
When true, generates an
external event due to
CTS signal change.
- Enabled: Configuration
enabled
- Disabled: Configuration
disabled
Table 4-17. RS-232 Standard Serial Advanced Configurations
Notes:
RX in TX: This advanced parameter is valid for RS-232C settings and RS-422.
Event RX DCD: External events such as the DCD signal COM 1 of the CPUs NX3010, NX3020,
NX3030, may be associated only to tasks of custom project profile, for further information, please
see the MasterTool IEC XE User Manual – MU299609.
Event RX CTS: External events such as the CTS signal COM 1, may be associated only to tasks of ,
custom project profile, for further information, please see the MasterTool IEC XE User Manual –
MU299609.
COM1 (NX3004/NX3005) and COM 2 (NX3010/NX3020/NX3030)
The COM 1 (NX3004 and NX3005) and COM 2 (NX3010, NX3020 and NX3030) communication
interface is composed by a DB9 female connector for the RS-422 and RS-485 patterns. It allows the
point to point or network communication in the open protocols MODBUS RTU slave or MODBUS
RTU master.
When using the MODBUS master / slave protocol, some of these parameters (such as Serial Mode,
Data Bits, RX Threshold and Events Serial) are automatically adjusted by MasterTool tool for the
correct operation of this protocol.
The parameters which must be configured for the proper functioning of the application are described
below:
Serial channel
configuration
Serial communication port
speed configuration
200, 300, 600, 1200, 1800,
2400, 4800, 9600, 19200,
38400, 57600, 115200 bps
Serial port parity
configuration
Odd
Even
Parity Always One
Parity Always Zero
No parity
Sets the data bits quantity
in each serial
communication character
Sets the serial port stop
bits
Sets the serial port
operation mode
- Extended Mode: Extended
operation mode which
delivers information regarding
the received data frame (see
note on COM 1 section)
- Normal Mode: Serial
communication normal
operation mode
Table 4-18. RS-485/RS-422 Standard Serial Configurations
The serial interfaces Data Bits configuration limits the Stop Bits and Communication Parity fields.
Therefore, the number of stop bits and the parity method will vary according to the data bits number.
Table 4-19 shows the allowed configurations for COM 1(NX3004 and NX3005) and COM 2
(NX3010, NX3020 and NX3030) interfaces.