Lenze MC3000 Series - Manual (Page 66)

62 13435743_EDBM301_v14 .0
57 SERIAL (SERIAL COMMUNICATIONS)
This parameter is used to activate serial communications . When using this feature, the drive
can communicate with a personal computer (PC), programmable logic controller (PLC),
or other external device that utilizes RS-485 serial communications for control . The serial
interface may be used to read present parameter settings (uploading to the control device),
write new parameter settings (downloading from the control device), monitor present drive
activity, and control drive activity . The following settings are available:
DISABLE Serial communication function is disabled .
W / TIMER Enables serial communications with a watchdog timer . If there is
no serial activity (read or write) for more than 10 seconds, serial
control will turn off and the drive will stop .
W / O TIMR Enables serial communications without a watchdog timer .
However, after 10 seconds of no serial activity, serial control
can be turned off by issuing a STOP command from any source
(keypad, terminal strip) other than the serial link .
NOTE 1: The keypad STOP button and remote STOP input (TB-1) are always active,
regardless of what method (LOCAL, REMOTE, or SERIAL) is being used to
control the drive .
NOTE 2: If a RESET command (Parameter 65 - PROGRAM) is issued through
the serial link, this parameter will not default back to DISABLE . However,
explicitly setting this parameter to DISABLE through the serial link will cut
off communication with the drive .
If developing an application for serial communications, refer to the RS-232/RS-485
Modbus or Metasys Communications Protocol Specification .
58 ADDRESS (SERIAL ADDRESS)
This parameter is used with the serial communications feature, and is intended for use
in a multiple drive network (RS-485) . The serial link will support drives with addresses
from 1 up to 255 (Metasys) or 247 (Modbus) .
61 PASSWORD (PASSWORD NUMBER)
This feature limits access to the programmable parameters for added security . The correct
password must be entered in order to change the parameters .
Pressing the PROG/RUN button on the keypad will activate the PASSWORD prompt .
If the correct password is entered, the PROGRAM MODE is entered and parameters
can be changed .
If the wrong password is entered, the display will flash ERROR: INCORRECT and
then return to the PASSWORD prompt to allow another attempt at entering the correct
password .
If the ENTER key is pressed while PASSWORD reads 0000, the MONITOR MODE will
be entered (if Parameter 64 - MONITOR, is set to ON), which will allow the parameters
to be viewed (except for PASSWORD), but not changed .
NOTE 1:
The factory default value is 0019 .
NOTE 2: If PASSWORD is set to 0000, the function is disabled . Pressing the PROG/
RUN key will result in direct entry into the PROGRAM mode without having
to enter a password .