ComPort (Communication Port)
The communication port that will be used by the instruction. Right-click to display a list.
| Alphanumeric | Description |
|---|---|
| ComRS232 | RS232 port of the datalogger |
| ComME | Datalogger's CS I/O port; modem enabled |
| Com310 | Datalogger's CS I/O port; COM310 modem |
| Com320 | Datalogger's CS I/O port; COM320 modem |
| ComSDC7 | Datalogger's CS I/O port; SDC 7 |
| ComSDC8 | Datalogger's CS I/O port; SDC 8 |
| ComSDC10 | Datalogger's CS I/O port; SDC10 |
| ComSDC11 | Datalogger's CS I/O port; SDC 11 |
| ComC1 | Datalogger's control ports 1 (TX) & 2 (RX) |
| ComC3 | Datalogger's control ports 3 (TX) & 4 (RX) |
| ComC5 | Datalogger's control ports 5 (TX) & 6 (RX) |
| ComC7 | Datalogger's control ports 7 (TX) & 8 (RX) |
SerialOpen, SerialClose, SerialOut, and SerialOutBlock also support output via SDE pin enabled or any SDC address by using extended ComPorts. Valid extended ComPorts are &H1F through &Hff (31..255, SDC address including mode bits. Note, however, that 31 is SDE pin enabled and 32 through 47 are used to address the SDM-SIO1A). When an extended ComPort is used, the output instructions will turn on SDE or address the CS I/O port with the specified SDC address, delay the amount of time specified by TXDelay, output asynchronously at the specified baud rate in the SerialOpen() instruction, delay the amount of time specified by TXDelay, then reset the CS I/O port.
NOTE: The Argos and GOES satellite extended ComPort address is &H41 (65). To specify an SDC address, the most significant bit is the address; e.g., SDC 7 would be &H70 (112).
NOTE: When using the ComME ComPort with non-PakBus protocols (PPP, Modbus, DNP3, or generic serial applications), incoming characters can be corrupted by concurrent use of the CS I/O port for SDC communication (e.g., keyboard display).
Type: Constant. For all instructions except SerialOpen, this parameter can also be a variable.