Chroma 19071 User Manual

RS485 Interface (For Link Model of 19073 + RS485)
5-19
Name
Size (byte)
Unit
Range
Description
Step Index
1
-
1~10
C Standard 4 pF
0~25100
0~5000
When Short Limit is OFF, Max. is 25100.
When Short Limit is not OFF, Max. is 5000.
Range
1
-
1~3
3 is maximum range
Return data: Reply Message
Example: Master (0x70): 0xAB 0x01 0x70 0x07 0x2F 0x01 0x00 0x04 0x00 0x00
0x01 0x53
Slave (0x01): 0xAB 0x70 0x01 0x02 0x7F 0x00 0x0E
Descriptions of example
The setting meanings of HEX inputs are as the following:
0xAB = Header
0x01 = Destination Address
0x70 = Source Address
0x07 = Data Field Length
0x2F = Command Code
0x01 = Step Index 1(setting data)
0x00 0x04 0x00 0x00 = C Standard 1024pF(setting data)
0x01 = Range 1(setting data)
0x53 = Checksum
The reading meanings of returning HEX code are as the following:
0xAB = Header
0x70 = Destination Address
0x01 = Source Address
0x02 = Data Field Length
0x7F = Reply Message Command Code
0x00 = Reply Message Return Data
0x0E = Checksum
Result?
Description: It queries the test result and measurement value.
Command code: 0xB1
Parameter: 2 bytes, serial numbers of steps + items of measurement values, the
range of serial numbers of steps is 0 ~ 10. When the range is 0, it
means to query the last one which starts to perform or the step which
be performed completely. According to the weight of 2 to divide
the measurement value option into 8 items, if queries multi-item
simultaneously, the lesser weight is sent at first.
The measurement value option:
AC mode
Item Number
Name
Size (byte)
Unit
Description
1
Mode
1
-
1:AC Mode
2
Meter 1 (Source)
2
V
30000: Maximum, 31000: Not Value
4
Meter 2 (Current)
4
100nA
1000000000: Maximum, 1100000000: Not Value
8
Meter 3
4
-
Reserved
16
Ramp Time
2
100mS
30000: Maximum, 31000: Not Value
32
Reserved
2
-
Reserved
64
Test Time
2
100mS
30000: Maximum, 31000: Not Value
128
Fall Time
2
100mS
30000: Maximum, 31000: Not Value

Chroma 19071 Specifications

General

Brand	Chroma
Model	19071
Category	Test Equipment
Language	English