SIREC D Display Recorder 7ND4000

4.10 COM PORT
The Com Ports Menu selection, in the Program
Menu, allows you to:
• set up the communication port to use
• assign a network ID number to the Recorder
• set up a modem attached to the RS232 port.
The menu options are identical for either type of
communication option, if any, fitted to the recorder.
There are two choices of communication options -
RS232 or RS485, however the modem will only
function with the RS232 option. There are three
basic menu options
• Com Port - Set up the serial port options
• Network ID - Set up the Modbus address
• ModemSetup - Set up the modem initialization
string.
4.10.1. Com Port - This option allows you to
configure the serial port. The options are:
• Protocol - can assign the Protocol as Modbus
RTU, Modbus ASCII.
• Port Setup - can assign the baud rate of 300,
1200, 2400, 4800, 9600, or 19200 and assign
Bits per Character, Parity, and Stop Bits.
To program the Com Port from the “Com Ports”
menu, use the UP (↑) or DOWN (↓) Arrow Keys to
highlight “Com Port" and press ENTER. The
following choices are available.
A. Protocol - Program Protocol as follows:
1. Use the UP (↑) or DOWN (↓) Arrow Keys to
highlight "Protocol" and press ENTER. The display
will show one of the two Protocol Types.
2. Use the UP (↑) or DOWN (↓) Arrow Keys to
select the desired protocol, “Modbus RTU” (default)
or “Modbus ASCII” and press ENTER. Press
EXIT to return to the Com Port menu.
Siemens AG C79000-G7374-C211-01
SIREC D Manual
Programming
B. Port Setup - To program Port Setup, use the
UP (↑) or DOWN (↓) Arrow Keys to highlight “Port
Setup" and press ENTER.
1. Baud Rate - The display will show one of the
six baud rates. Use the UP (↑) or DOWN (↓) Arrow
Keys to select the desired baud rate of, 300,
1200, 2400, 4800, 9600 (default), or 19200, and
press ENTER. The display will read "parity? N”
2. Parity - Use the UP (↑) or DOWN (↓) Arrow
Keys to select either N NONE, E EVEN, or O
ODD, to match your communications device, and
press ENTER. The display reads "stop bits? X".
3. Stop Bits - Use the UP (↑) or DOWN (↓) Arrow
Keys to select either 1 or 2, to match your communications
device, and press ENTER. The display
returns to the "Port setup" menu item.
NOTE
By default the com port uses 8 bits of data
for the character size.
4.10.2 Network ID. The Network ID, or unit
address, assigns a user programmed Recorder ID
number for use in multidrop Modbus environments.
To Program the Network ID:
1. Use the UP (↑) or DOWN (↓) Arrow Keys to
highlight “Network ID". Press ENTER to invoke
the Network ID menu, "net id�XXX�" will be
displayed.
2. Use the Numeric Keypad to enter a Network ID
between 1 (default) and 255. When the correct
Network ID is displayed, press ENTER and the
display returns to the "Network ID" prompt. Even if
you are not using the unit in a Modbus environment
it still requires a network ID to communicate
with the Companion Software.
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