Basler Electric BE1-700 Modbus Protocol - Manual (Page 55)

9376700991 Rev D BE1-700 Modbus™ Protocol 3-7
Control Parameters
All values read from and written to Select and Operate registers are ASCII characters. Select registers
must be written first, followed by a write to the Operate register. A 30 second window starts after the first
write to the Select register. If the second write to the Operate register is not received within the 30 second
window, an error response will be returned.
Writes to Operate registers 40138, 40140 - 40150 with ASCII data 'E ' (Enable Output override control) or
'D' (Disable Output override control) requires an additional write of 'Y' to Exit register 40001 to allow these
control settings to be saved to the relay internal EEPROM.
NOTE: All values read from and written to Select and Operate registers are ASCII characters.
40117 Select Group ASC(1)
Read: To read a value other than ASCII character 'X', the Select Group register must be the most
recent control register written AND must have been written within the previous 30
seconds.
0 if Group 0 selection has been made.
1 if Group 1 selection has been made.
L if Logic selection has been made.
X if Group control not selected or control timer has expired.
Write: The desired ASCII character.
0 to select Group 0.
1 to select Group 1.
L to select Logic.
40118 Operate Group ASC(1)
Read: Current control.
0 if Group 0.
1 if Group 1.
L if Logic.
Write: The desired ASCII character to alter control (corresponding Select register must contain
same value, written within previous 30 seconds).
0 to select Group 0.
1 to select Group 1.
L to select Logic.
40119 Select Virtual Selector Switch 43 ASC(1)
40121 Select Virtual Selector Switch 143 ASC(1)
Read: To read a value other than ASCII character 'X,' the Select Virtual Selector Switch register
must be the most recent control register written AND must have been written within the
previous 30 seconds.
P if Pulse Switch selection has been made.
0 if Latch Switch at 0 selection has been made.
1 if Latch Switch at 1 selection has been made.
X if Virtual Selector Switch control not selected or control timer has expired.
Write: The desired ASCII character.
P to select Pulsing the Switch.
0 to select Latching the Switch at 0.
1 to select Latching the Switch at 1.
40120 Operate Virtual Selector Switch 43 ASC(1)
40122 Operate Virtual Selector Switch 143 ASC(1)
Read: Current control.
P if Pulse Switch.
0 if Latch Switch at 0.
1 if Latch Switch at 1.
Write: The desired ASCII character to alter control (corresponding Select register must contain
same value, written within previous 30 seconds).
P to Pulse Switch.
0 to Latch Switch at 0, 1 to Latch Switch at 1.