CHAPTER 2: MODBUS COMMUNICATION MEMORY MAP
UR FAMILY – COMMUNICATIONS GUIDE 2-107
2
" 7460 ...Repeated for Breaker Failure 19
" 7490 ...Repeated for Breaker Failure 20
" 74C0 ...Repeated for Breaker Failure 21
" 74F0 ...Repeated for Breaker Failure 22
" 7520 ...Repeated for Breaker Failure 23
" 7550 ...Repeated for Breaker Failure 24
Ground Distance (Read/Write Grouped Setting) (3 or 5 Modules)
D30, D60, L60, 
L90, T60
7130 Ground Distance Zone 1 Function 0 to 1 --- 1 F102 0 (Disabled)
" 7131 Ground Distance Zone 1 Current 
Supervision
0.05 to 30 pu 0.001 F001 200
" 7132 Ground Distance Zone 1 Reach 0.02 to 500 ohms 0.01 F001 200
" 7133 Ground Distance Zone 1 Direction 0 to 2 --- 1 F154 0 (Forward)
" 7134 Ground Distance Zone 1 Comparator Limit 30 to 90 degrees 1 F001 90
" 7135 Ground Distance Zone 1 Delay 0 to 65.535 s 0.001 F001 0
" 7136 Ground Distance Zone 1 Block 0 to 4294967295 --- 1 F300 0
" 7138 Ground Distance Zone 1 Target 0 to 2 --- 1 F109 0 (Self-reset)
" 7139 Ground Distance Zone 1 Events 0 to 1 --- 1 F102 0 (Disabled)
" 713A Ground Distance Zone 1 Shape 0 to 1 --- 1 F120 0 (Mho)
" 713B Ground Distance Zone 1 Z0 Z1 Magnitude 0 to 10 --- 0.01 F001 270
" 713C Ground Distance Zone 1 Z0 Z1 Angle -90 to 90 degrees 1 F002 0
" 713D Ground Distance Zone 1 RCA 30 to 90 degrees 1 F001 85
" 713E Ground Distance Zone 1 DIR RCA 30 to 90 degrees 1 F001 85
" 713F Ground Distance Zone 1 DIR Comp Limit 30 to 90 degrees 1 F001 90
" 7140 Ground Distance Zone 1 Quad Right Blinder 0.02 to 500 ohms 0.01 F001 1000
" 7141 Ground Distance Zone 1 Quad Right Blinder 
RCA
60 to 90 degrees 1 F001 85
" 7142 Ground Distance Zone 1 Quad Left Blinder 0.02 to 500 ohms 0.01 F001 1000
" 7143 Ground Distance Zone 1 Quad Left Blinder 
RCA
60 to 90 degrees 1 F001 85
" 7144 Ground Distance Zone 1 Z0M Z1 Magnitude 0 to 7 --- 0.01 F001 0
" 7145 Ground Distance Zone 1 Z0M Z1 Angle -90 to 90 degrees 1 F002 0
" 7146 Ground Distance Zone 1 Voltage Level 0 to 5 pu 0.001 F001 0
" 7147 Ground Distance Zone 1 Non-
Homogeneous Angle
-40 to 40 degrees 0.1 F002 0
" 7148 Ground Distance Zone 1 POL Current 0 to 1 --- 1 F521 0 (Zero-seq)
" 7149 Ground Distance Zone 1 Reverse Reach 0.02 to 500 ohms 0.01 F001 200
" 714A Ground Distance Zone 1 Reverse Reach 
RCA
30 to 90 degrees 1 F001 85
" 714B Reserved (7 items) 0 to 65535 --- 1 F001 0
" 7152 ...Repeated for Ground Distance Zone 2
" 7174 ...Repeated for Ground Distance Zone 3
D30, D60, L90, 
T60
7196 ...Repeated for Ground Distance Zone 4
" 71B8 ...Repeated for Ground Distance Zone 5
Line Pickup (Read/Write Grouped Setting)
D30, D60, L60, 
L90
71E0 Line Pickup Function 0 to 1 --- 1 F102 0 (Disabled)
" 71E1 Line Pickup Signal Source 0 to 5 --- 1 F167 0 (SRC 1)
Products Address Register name Range Units Step Format Default