5.7 Setting the Maximum System Devices
To set the maximum number of devices in your system, use the MAXN submenu, located under the *DVCFG (Device
Configuration) menu.
Selecting the maximum number of system radio devices (Gateway and all Nodes) changes the timing for the wireless
network. For example, if you are running four Nodes in your wireless network, set the system's maximum device count to 8.
This allows up to 8 radio devices, including the Gateway, in the wireless network and offers the highest throughput, 62.5
milliseconds, for each Node. The choices are 8, 16, 32, and 48 devices.
5.8 Storage and Sleep Modes
Storage Mode (applies to battery-powered models only)—While in storage mode, the radio does not operate. All Sure
Cross
®
radios powered from an integrated battery ship from the factory in storage mode to conserve the battery. To wake
the device, press and hold button 1 for 5 seconds. To put any
Flex
Power
®
or integrated battery Sure Cross radio into
storage mode, press and hold button 1 for 5 seconds. The radio is in storage mode when the LEDs stop blinking, but in
some models, the LCD remains on for an additional minute after the radio enters storage mode. After a device has entered
storage mode, you must wait 1 minute before waking it.
Sleep Mode (applies to both battery and 10–30 V dc powered models)—During normal operation, the Sure Cross radio
devices enter sleep mode after 15 minutes of operation. The radio continues to function, but the LCD goes blank. To wake
the device, press any button.
5.9 Modbus Holding Registers
There are sixteen Modbus holding registers for each device. Calculate the holding register number for each device using the
equation:
Register number = I/O# + (Node# × 16)
.
The Gateway is always device 0 and the Gateway’s holding registers are registers 1 through 16. Registers for Node 1 are 17
through 32. Although only seven Nodes are listed, the registers continue for as many Nodes as are in the network. For
example, the register number for Node 10, I/O point 15, is 175.
Table 1: Modbus Holding Registers
I/O Point
Gateway
Node 1
Node 2
Node 3
Node 4
Node 5
Node 6
Node 7
1
1
17
33
49
65
81
97
113
2
2
18
34
50
66
82
98
114
3
3
19
35
51
67
83
99
115
4
4
20
36
52
68
84
100
116
5
5
21
37
53
69
85
101
117
6
6
22
38
54
70
86
102
118
7
7
23
39
55
71
87
103
119
8
8
24
40
56
72
88
104
120
9
9
25
41
57
73
89
105
121
10
10
26
42
58
74
90
106
122
11
11
27
43
59
75
91
107
123
12
12
28
44
60
76
92
108
124
13
13
29
45
61
77
93
109
125
14
14
30
46
62
78
94
110
126
15
15
31
47
63
79
95
111
127
16
16
32
48
64
80
96
112
128
Sure Cross
®
Performance DX80 Wireless I/O Networks
www.bannerengineering.com - Tel: + 1 888 373 6767
43
