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Modbus interface
Indoor unit
central control
address
13
14
15
16
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
(2) Perform the communication status checking between Modbus interface and Modbus Master.
Check that the communication with Modbus Master is normally performed.
When bit2 of SW3 is set to "OFF", the communication status with the Modbus Master is displayed by LED5.
Communication status with Modbus Master
LED indication during normal operation
LED1
Power indicator
LED2
RS-485 communication status indicator
LED3
Uh Line communication status indicator
LED4
Uh Line communication error indicator
LED5
TEST indicator
13-EN
Indoor unit
SW2 SW1
central control
address
0
C
29
0
D
30
0
E
31
0
F
32
4
0
81
4
1
82
4
2
83
4
3
84
4
4
85
4
5
86
4
6
87
4
7
88
4
8
89
4
9
90
4
A
91
4
B
92
4
C
93
4
D
94
4
E
95
4
F
96
Normal reception
Error
LED
Indoor unit
SW2 SW1
central control
address
1
C
45
1
D
46
1
E
47
1
F
48
5
0
97
5
1
98
5
2
99
5
3
100
5
4
101
5
5
102
5
6
103
5
7
104
5
8
105
5
9
106
5
A
107
5
B
108
5
C
109
5
D
110
5
E
111
5
F
112
LED5
Lighting
Lights for one second
A communication error occurred or no data has been
Light off
received.
Lights while the power is on.
Blinks during RS-485 communication.
Blinks during Uh Line communication.
Lights temporarily when Uh Line is busy.
Used in the test mode.
Installation Manual
Indoor unit
SW2 SW1
central control
address
2
C
61
2
D
62
2
E
63
2
F
64
6
0
113
6
1
114
6
2
115
6
3
116
6
4
117
6
5
118
6
6
119
6
7
120
6
8
121
6
9
122
6
A
123
6
B
124
6
C
125
6
D
126
6
E
127
6
F
128
Remarks
Description
SW2 SW1
3
C
3
D
3
E
3
F
7
0
7
1
7
2
7
3
7
4
7
5
7
6
7
7
7
8
7
9
7
A
7
B
7
C
7
D
7
E
7
F
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