15
AU TO M AT I C T R A N SFER S W I TC H , OT M _ C _ 2 1 D
Register (continued)
Address
(DEC)
Function
code
(DEC)
Values
LAST_ALARM
25
04
0=No alarms
1= Switch I transfer fail
2= Switch II transfer fail
3=Both I and II are ON
4= Switch I transfer fail in emergency off
5= Switch II transfer fail in emergency off
SW_VERSION
26
04
Bit8-15= Major SW version (e.g. 0x1A=26)
Bit0-7 =Minor SW version (e.g. 0xAA=170)
PHASES
27
04
0= 3 phases with Neutral line
1= 3 phases without Neutral line
2= 1 phase
RATED_FREQUENCY
28
04
0=50Hz
1=60Hz
GENERATOR_STOP_DELAY
29
04
0=30s
1=240s
GENERATOR_USAGE
30
04
0= No Generator
1= Generator In Use
GENERATOR_START
31
06
1=Start generator
CONTROL
32
06
1= Remote control to I
2= Remote control to O
3= Remote control to II
4= Enter remote test function (see 3.3.2)
OPERATING_MODE
33
03/06
0=Local monitoring mode
1= Remote control mode
Table 4. OTM_C21D register information
Modbus parameters configuring and ATS control function is available only when OTM_C21D
is working in remote control mode
Remote control can only be operated under automatic operation mode
After remote control, OTM_C21D must be reset to Local monitoring mode, then it can re-
turn to automatic operation mode
