Effective Date: 2/04
IL17574C
Page 5-15
IQ 300
Effective Date: 2/04
Page 5-15
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www.cutler-hammer.eaton.com
Field Name
Example
(Hex)
Slave Address
TBD
Function
10
Starting Address Hi
60
Starting Address Lo
00
Number of Registers Hi
00
Number of Registers Lo
0B
Error Check (LRC or CRC)
--
Table 5.12 Example Response
Message
Byte
Description
1
Byte0
Number of additional data messages = 5
Byte1
Firmware Revision
Byte2
Firmware Version
2
Byte0
CT-Ratio
Code
Ratio
Increment
00 – 15
5:5 – 110:5
5:5
16 – 6E
120:5 – 1000:5
10:5
6F – 78
1025:5 – 1250:5
25:5
79 – FF
1300:5 – 8000:5
50:5
Byte1
PT-Ratio
Code
Ratio
Increment
00 – 32
1:1 – 6:1
0.1:1
33 – 40
7:1 – 20:1
1:1
41 – 70
25:1 – 260:1
5:1
71 – FF
270:1 – 1690:1
10:1
Byte2
Bit
Description
B0
Frequency (0=60 Hertz, 1=50 Hertz)
B1
VAR sign change (1 = +VARs for lagging power factor,
-VARs for leading power factor.
0 = -VARs for lagging power factor,
+VARs for leading power factor.)
B2-3
Wiring Configuration
00 = 4-wire, 10 & 01 = 3-wire, 11 = Single phase
B4-6
Code
Dmd Window
Code
Dmd Window
000
5 minute
100
25 minute
001
10 minute
101
30 minute
010
15 minute
110
45 minute
011
20 minute
111
60 minute
B7
Reserved = 0
Table 5.13 Setpoint Descriptions (3F9)
The normal response returns a
slave address, function code,
starting address and quantity of
registers preset. Table 5.12 is
an example of the response to
the query shown in Table 5.11
The description of setpoints is
shown in Table 5.13.
