ABB RELION REX640 Operation Manual page 122

Commissioning
Table 19: LED configuration (COM1004...COM1005)
LED
X1
X2
X6
X7 TX
X8 TX
X8 TX
IRIG-B
7.4.2.5 Assigning of a serial communication protocol to a COM serial port
The settings of the serial communication protocol instance include a setting
parameter, called either
COM2 setting.
7.4.2.6 Serial link diagnostics and monitoring
Serial communication diagnostics and monitoring is divided between the serial link
driver and the serial communication protocol. The lower-level physical and protocol-
independent aspects of the UART-based serial communication are monitored in the
serial link driver. Diagnostic counters and monitoring values are located on the HMI
under Monitoring > Communication > COMn (n= 1,2,...).
Depending on the communication protocol, the serial driver software receives single
characters or complete protocol frames, based on the frame start/stop characters
or on link frame timing.
Table 20: Setting parameters
Parameter
Fiber mode
Serial mode
Baudrate
Table 21: Diagnostic counters and indications
Counters
Characters received
Frames received
Table continues on the next page
122
Port or Serial port , which is used to select the COM1 or
Since not all serial protocol standards allow changes in link parameters,
all link setting parameters are not found in the COMn settings. Additional
link setting parameters are found in the setting parameter list of the
used serial protocol.
Description
Defines the fiber-optic mode used. Setting "No fiber" is the
same as galvanic mode.
Used for galvanic RS-485 modes 2- or 4-wire. This setting is
relevant only if Fiber mode is set to "No fiber".
Communication speed used.
Description
Counts all incoming non-erroneous characters. This counter
operates regardless of whether the serial driver is set to de-
tect a whole protocol link frame or just separate characters.
Counts all protocol-specific non-erroneous frames received.
Protocol-specific frames can be based on timing (for exam-
Description
X1 LANA
X2 LANB
X6 LD
FO-UART
RS-485/COM2
RS-485/COM1
IRIG-B
1MRS759118 D
REX640
Operation Manual