CHAPTER 2: MODBUS COMMUNICATION MEMORY MAP
UR FAMILY – COMMUNICATIONS GUIDE 2-211
2
to input/output state 17 to 32 (if required). The third register indi-
cates input/output state with bits 0 to 15 corresponding to input/
output state 33 to 48 (if required). The fourth register indicates
input/output state with bits 0 to 15 corresponding to input/output
state 49 to 64 (if required).
The number of registers required is determined by the specific
data item. A bit value of 0 = Off and 1 = On.
0 = Off, 1 = On
F501
UR_UINT16: LED STATUS
Low byte of register indicates LED status with bit 0 representing
the top LED and bit 7 the bottom LED. A bit value of 1 indicates the
LED is on, 0 indicates the LED is off.
0 = Off, 1 = On
F502
BITFIELD: ELEMENT OPERATE STATES
Each bit contains the operate state for an element. See the F124
format code for a list of element IDs. The operate bit for element
ID X is bit [X mod 16] in register [X/16].
F513
ENUMERATION: POWER SWING MODE
0 = Two Step, 1 = Three Step
F514
ENUMERATION: POWER SWING TRIP MODE
0 = Delayed, 1 = Early
F515
ENUMERATION ELEMENT INPUT MODE
0 = SIGNED, 1 = ABSOLUTE
F516
ENUMERATION ELEMENT COMPARE MODE
0 = LEVEL, 1 = DELTA
F517
ENUMERATION: ELEMENT DIRECTION OPERATION
0 = OVER, 1 = UNDER
F518
ENUMERATION: FLEXELEMENT UNITS
0 = Milliseconds, 1 = Seconds, 2 = Minutes
F519
ENUMERATION: NON-VOLATILE LATCH
0 = Reset-Dominant, 1 = Set-Dominant
F521
ENUMERATION: GROUND DISTANCE POLARIZING CURRENT
0 = Zero-Sequence, 1 = Negative-Sequence
F522
ENUMERATION: TRANSDUCER DCmA OUTPUT RANGE
0 = –1 to 1 mA, 1 = 0 to 1 mA, 2 = 4 to 20 mA
F523
ENUMERATION: DNP OBJECTS 20, 22, AND 23 DEFAULT
VARIATION
F524
ENUMERATION: DNP OBJECT 21 DEFAULT VARIATION
F525
ENUMERATION: DNP OBJECT 32 DEFAULT VARIATION
Bitmask Default variation
01
12
25
36
Bitmask Default variation
01
12
29
310
Bitmask Default variation
01
12
23
34
45
57
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