Emerson FloBoss 107 Instruction Manual page 79

Issued Feb-07
The FB107 supports up to four communication ports including:
Local Operator Interface (RS-232C) – LOI for asynchronous
serial communications, with DB9 connector. Defaults for the LOI
are 19,200 baud rate, 8 data bits, no parity, and 1 stop bit.
Local Port is labeled LOI on the CPU.
Note:
EIA-485 (RS-485) – COM1 for asynchronous serial
communications. Standard for differential data transmission over
distances of up to 1220 m (4000 ft). EIA-485 (RS-485) provides
asynchronous serial communications for multi-drop units on a serial
network over long distances using inexpensive twisted-pair cables.
Defaults for the EIA-485 (RS-485) are 19,200 baud rate, 8 data bits,
no parity, and 1 stop bit.
COM1 is labeled 485 on the CPU.
Note:
EIA-232 (RS-232) Default – COM2 for serial communications.
Standard for single-ended data transmission over distances of up to
15 m (50 ft). EIA-232 (RS-232) provides point-to-point
asynchronous serial communication. EIA-232 (RS-232)
communications commonly provide the physical interface for
connecting serial devices, such as gas chromatographs and radios.
Defaults for the EIA-232 (RS-232) are 19,200 baud rate, 8 data bits,
no parity, and 1 stop bit.
Notes:
COM2 is located on the CPU.
When you install a communications module in slot 2, the
firmware redirects the CPU module's communications port
(COM2) to the type of module installed in slot 2. Configure
COM2 based on the type of communication module installed in
slot 2.
Optional communication modules – COM3 includes EIA-232
(RS-232) and EIA-485 (RS-485) communications. Located on the
communications module.
COM3 is only activated when a communications module is
Note:
installed in slot 1.
Use ROCLINK 800 to configure the modules.
Each communications module uses a separate, single-ended channel
from the other modules. The field interface protects the electronics in
the module. Each module reduces the effect of noise on communication
errors through filtering.
LEDs display the RX (receive) and TX (transmit) signals for EIA-232
(RS-232) communications.
Communications
FloBoss 107 Instruction Manual
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