Megmeet MC100 Series User Manual

2
Item
Index
Celsius(°C)
Fahrenheit (°F)
Type S
0°C ~ 1600°C
Type S
32°F ~ 2912°F
Digital output
12-digit AD conversion, 16-digit complement for storage
Type K
-1000 ~ +12000
Type K
-1480 ~ +21920
Type J
-1000 ~ +10000
Type J
-1480 ~ +18320
Type E
-1000 ~ +10000
Type E
-1480 ~ +18320
Type N
-1000 ~ +12000
Type N
-1480 ~ +21920
Type T
-2000 ~ +4000
Type T
-3280 ~ +7520
Type R
0 ~ 16000
Type R
320 ~ 29120
Type S
0 ~ 16000
Type S
320 ~ 29120
Lowest resolution
Type K
0.3°C
Type K
0.54°F
Type J
0.2°C
Type J
0.36°F
Type E
0.3°C
Type E
0.54°F
Type N
0.3°C
Type N
0.54°F
Type T
0.2°C
Type T
0.36°F
Lowest resolution
Type R
0.5°C
Type R
0.9°F
Type S
0.5°C
Type S
0.9°F
Accuracy
± (0.5% full range+1°C), water freezing point: 0°C/32°F
Isolation
Between analog circuit and digital circuit: photocoupler.
Between analog circuit and input 24Vdc power: internal
isolation. Between analog channels: none
2.3 Buffer Memory
MC100-2TC/4TC exchanges data with the basic module through Buffer
Memory (BFM). After MC100-2TC/4TC is set through the host software, the
basic module will write data into MC100-2TC/4TC BFM to set the state of
MC100-2TC/4TC, and display the data from MC100-2TC/4TC on the host
software interface. See figures 4-1 ~ 4-8.
Table 2-3 describes the contents of the BFM of MC100-2TC/4TC.
Table 2-3 BFM contents
BFM
Content
Default
Property
#100 ~ #103
Average temperature of
CH1~CH4
R
#200 ~ #203
Current temperature of
CH1~CH4
R
#300
Error status word 0
R
#301
Error status word 1
R
#600
Channel mode word
0x0000
RW
#700 ~ #703
Sampling times respectively
for averages of CH1 ~ CH3
8
RW
#900
CH1-D0
0 (input mode 0)
RW
#901
CH1-A0
0 (input mode 0)
RW
#902
CH1-D1
12000 (input mode 0)
RW
#903
CH1-A1
12000 (input mode 0)
RW
#904
CH2-D0
0 (input mode 0)
RW
#905
CH2-A0
0 (input mode 0)
RW
#906
CH2-D1
12000 (input mode 0)
RW
#907
CH2-A1
12000 (input mode 0)
RW
#908
CH3-D0
0 (input mode 0)
RW
#909
CH3-A0
0 (input mode 0)
RW
#910
CH3-D1
12000 (input mode 0)
RW
#911
CH3-A1
12000 (input mode 0)
RW
#912
CH4-D0
0 (input mode 0)
RW
#913
CH4-A0
0 (input mode 0)
RW
#914
CH4-D1
12000 (input mode 0)
RW
#915
CH4-A1
12000 (input mode 0)
RW
#3000
Cold end temperature
For test
R
#4094
Module software version
0x1000
R
#4095
Module ID
0x4041
R
Note:
1. CH1 stands for channel 1; CH2, channel 2; CH3, channel 3, and so on.
2. Property explanation: R means read only. An R element cannot be
written. RW means read and write. Reading from a non-existent
element will get 0.
3. BFM#200 ~ BFM#203: current temperature. Unit: 0.1°C/°F (depending on
the value of BFM#600). The average value are stored in
BFM#100-BFM#103.
4. BFM#300 error status information is shown in Table 2-4.
Table 2-4 BFM#300 status information
Bit status of BFM#300
ON (1)
OFF (0)
b0: error
b1 or b2 is ON, AD conversion
of all channels stopped
No error
b2: power failure
24Vdc power supply failed
Power supply normal
b3: hardware fault
AD converter or other
hardware faulty
Hardware normal
b10: digital range error
Digital output after AD
conversion outside the range
of -2048 ~ 2047
Digital output normal
b12 ~ b15: reserved
5. BFM#301 error status information is shown in Table 2-5.
Table 2-5 BFM#301 status information
Channel
Bit
ON (1)
OFF (0)
1
b0
CH1 temperature lower than lower limit
CH1 normal
b1
CH1 temperature higher than upper limit
CH1 normal
2
b2
CH2 temperature lower than lower limit
CH2 normal
b3
CH2 temperature higher than upper limit
CH2 normal
3
b4
CH3 temperature lower than lower limit
CH3 normal
b5
CH3 temperature higher than upper limit
CH3 normal
4
b6
CH4 temperature lower than lower limit
CH4 normal
b7
CH4 temperature higher than upper limit
CH4 normal
Reserved
b8 ~ b15
6. BFM#600: channel mode selection, used to set the working modes of CH1
~ CH4. See Figure 2-1 for their correspondence.
×
4
0
x
×
3
×
2
×
1
Working mode for CH1
600#
Working mode for CH2
Working mode for CH3
Working mode for CH4
Figure 2-1 Mode setting element vs. channel
The exact meaning of the X in the channel mode is shown in Table 2-6. The
conversion time of every channel is 240ms. When a channel is set closed, it
will not perform AD conversion, thereby reducing the total conversion time.
Table 2-6 Meaning of X in channel mode
No.
X (hexadecimal)
Meaning
1
0
K type thermocouple. Digital signal unit: 0.1°C
2
1
K type thermocouple. Digital signal unit: 0.1°F
3
2
J type thermocouple. Digital signal unit: 0.1°C
4
3
J type thermocouple. Digital signal unit: 0.1°F
5
4
E type thermocouple. Digital signal unit: 0.1°C
6
5
E type thermocouple. Digital signal unit: 0.1°F
7
6
N type thermocouple. Digital signal unit: 0.1°C
8
7
N type thermocouple. Digital signal unit: 0.1°F
9
8
T type thermocouple. Digital signal unit: 0.1°C
10
9
T type thermocouple. Digital signal unit: 0.1°F
11
A
R type thermocouple. Digital signal unit: 0.1°C
12
B
R type thermocouple. Digital signal unit: 0.1°F
13
C
S type thermocouple. Digital signal unit: 0.1°C
14
D
S type thermocouple. Digital signal unit: 0.1°F
15
E
Channel closed
16
F
Channel closed
7. BFM#700 ~ BFM#703: average sampling times setting. Range: 1 ~ 256. If
the setting is outside this range, the value will be reset to the default 8.
5. BFM#900 ~ BFM#915: channel characteristics setting data register. Use
two points to define the channel characteristic. D0 and D1 are the channel
digital output, in the unit of 0.1°C. A0 and A1 are the actual temperature input
of the channel, also in the unit of 0.1°C. Each channel occupies 4 words.
You can change the channel characteristic by changing D0 and D1. The
setting range of D0 is -1000~1000 (0.1°C); D1, 11,000~13,000 (0.1°C). If the
setting is outside this range, MC100-2TC/4TC will not accept it, but maintain
the original valid setting.
Note that the characters are all in 0.1°C unit. Convert Fahrenheit parameters

Megmeet MC100 Series Specifications

General

Brand	Megmeet
Model	MC100 Series
Category	Controller
Language	English