Westermo MX-16 - Handbuch (Seite 19)

19 6604-2001
Settings
The following settings can be selected through a terminal:
Parity (not selectable for channel 0)
Non (Default)
Odd
Even
Number of stop bits (not selectable for channel 0)
One (Default)
Two
Wordlength (not selectable for channel 0)
7 bits
8 bits (Default)
Baudrate (Channel 1–4)
1 200 bit/s
2 400 bit/s
4 800 bit/s
9 600 bit/s (Default)
19 200 bit/s
38 400 bit/s
115 200 bit/s
Baudrate (Channel 0)
4 800 bit/s
9 600 bit/s (Default)
19 200 bit/s
38 400 bit/s
102 400 bit/s
204 800 bit/s
Transmit condition* (Channel 1–4)
• Number of incoming characters before a frame is send to the “remote” MX-16
Valid value: 1–250 characters, default: 100
• Time in ms before a frame is send (if no more characters are received).
Valid value: 1–1000 ms, default: 5
*) The communication between two MX-16 units, over the combined channel (channel 0), is protocol-based. If
characters are received on an in-channel (channel 1–4), the MX-16 unit has to decide when to put the characters
in a frame together with a header and send them on the combined channel to the “remote” MX-16. These deci-
sion is called transmit conditions in the setup program. There are two transmit conditions that the unit use to
decide whether it should send the characters received or to wait for more characters. The first condition is a
trigger level based on the number of received characters. If the unit has received enough characters (according
to this trigger level), it will prepare the received data together with a 4-character header and send this frame to
the “remote” MX-16. The other transmit condition is a timeout value. If the number of characters received are
less than the specified character-based transmit condition, the unit will wait this time for further characters
before it prepares the frame and sends it on the combined channel (regardless of how many characters
received). The header tells the “remote” MX-16 on which channel to send the data.