Yudian AI-702M User manual

AI-702M/704M/706M HIGH PERFORMANCE INTELLIGENT
MULTI-CHANNEL INDICATORS
Operation Instruction Version 7.6
(Ideal for measurement, indication, alarm, calculation and retransmission of
temperature, pressure, flow, level, humidity etc.)
SUMMARY:
AI-702M, AI-704M and AI-706M multi-channel indicators provide 1-2, 1-4, 1-6 channels of
independent process indications, and are ideal for the measurement, indication, alarm,
calculation and retransmission of temperature, pressure, flow, level and humidity etc.
Features:
★Programmable and modular inputs. Multiple input types of thermocouples and RTDs,
voltage/current inputs and two-wire transmitters are field- selectable.
★Every channel can have independent input specification. All channels are equipped
with digital adjustment and digital filtering functions and each channel can set different
digital adjustment and filtering parameters.
★High performance hardware design, greatly decreased the temperature drift and the
interference between channels, thus multi-channel measurement accuracy is 0.2% full
scale, the same as that of single channel.
★Provide high accuracy compensation function such as ice-point compensation, copper
resistance compensation and thermostat compensation to thermocouple inputs.
★Provide accurate internal calculation functions including addition, extraction, and
multiplication.
★Support up to 2 isolated retransmission output. Any input channel can be retransmitted
to OUTP port or all channels are cyclically retransmitted.
★Provide manual/auto pilot display, with 2 pilot speed selectable.
★Support up to 7 on-off signal inputs/outputs which can work as alarm output or on-off
signal I/O for host computer.
★Every input channel has independent low/high limit alarm which can be assigned any
alarm output.
★Advanced communication function. Provide high accuracy and stability multi-channel
analog data sampling function to host computer. The host computer can also input up
to 7 channel on-off signal or execute on-off operation through an indicator.
★Allow to define up to 12 field parameters, and user can freely customize the instrument.
★Multiple dimensions are selectable. 100~240VAC universal power supply.
★Achieved ISO9001 and CE certificates, comply with EMC standard, high reliability and
stability. The power and I/O terminals have passed the anti-interference test of
4KV/5KHz burst of pulses.

Ordering Code:
Designed with modular principle, AI-702M/704M/706M can be equipped with 6 modules on 6
sockets: M1, M2(MIO), M3(OUTP), ALM, AUX, and COMM. M1, M2 and M3 can be
equipped with various input modules, each of which has 1or 2 analog input channels. ALM,
AUX and M3(OUTP) can be equipped with relay output module, each of which has 1 or 2
alarm output channels. When needed, M2 can also be installed with a single relay output
module and work as alarm output. COMM can only be equipped with RS485 interface for
communication with computer. M2 and M3 can be equipped with either analog input module
for measurement or relay output modules for alarm. All inputs and outputs are
programmable.
The ordering code of AI-702M/704M/706M is made up of 9 parts, for example:
AI-706M - A - J1 - J2 - J5 - L5 - L5 - S - 24VDC
① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨
The above code symbols a AI-706M instrument with: front panel dimension 96×96mm, 2
thermocouple inputs, 2 two-wire RTD inputs, 2 current inputs, 4 alarm relay outputs, RS485
communication interface and the supply power is 24VDC. The explanation for each code is
below:
①Shows the model of the indicator
AI-702M, AI-704M, AI-706M respectively indicate 2, 4, 6 channels indicator.
②Shows dimension.
The depth of the instrument is about 13.5mm(foreside) + 100mm(rearward).
Model Front Panel
(width x height)
Cut-out
(width x height) Remarks
A 96x96mm 92x92mm
B 160X80mm 152x76mm
C 80x160mm 76x152mm
E 48x96mm 45x92mm
E5 96x48mm
E5 is no panel design. It can be installed on
DIN trail and programmed by connecting to
external display.
F 96x48mm 92x45mm
③~⑧Symbols the module type installed on sockets ( M1、M2、M3、AL1、AL2、COMM):
( “√” means the module can be installed on the according socket)
Module M1 M2
(MIO)
M3
(OUTP) ALM AUX COMM
N: No module installed √√√√√√
J0: 1 channel three-wire RTD,
thermocouple or mV voltage input √√√
J1: 2 channel two-wire thermocouple or
mV voltage inputs √√√
J2: 2 channel two-wire RTD inputs √√√
J3: 2 channel voltage inputs of 0-1V, 0-3V,
0-5V or 1-5V etc. √√√

J4: 2 channel current inputs of 0-12mA,
4-20mA, 0-20mA etc. √√√
J5: 2 channel two-wires transmitter
provided 24VDC power supply. √√√
I5: 2 channel on-off signal inputs √√√
L1: Single relay contact (NO+NC) output.
(30VDC/2A, 264VAC/2A) √√√
L2: Single relay contact (NO+NC) output.
(30VDC/1A, 264VAC/1A) √√√
L4: Single relay contact (NO+ NC) output.
(30VDC/2A, 264VAC/2A) √√√
L5: Dual relay contact (NO) outputs.
(30VDC/2A, 264VAC/2A) √√√
W1:
1 channel Thyristor normal open
output.
(“never burn out” technology, able to
stand 0.3A continuous current or 1A
transient current)
√√√
G: 1 SSR voltage output (12VDC/30mA) √√√
G5: 2 SSR voltage outputs (12VDC/30mA) √√√
S: Photoelectric isolated RS485 interface √
S4: Photoelectric isolated RS485 interface
with isolated power supply. √
X3: Photoelectric isolated linear current
output √√
X5:
Photoelectric isolated linear current
output with its own isolated power
supply.
√√
V5: Photoelectric isolated 5VDC/50mA
power supply for transmitter. √√
V10: Photoelectric isolated 10VDC/50mA
power supply for transmitter. √√
V12: Photoelectric isolated 12VDC/50mA
power supply for transmitter. √√
V24: Photoelectric isolated 24VDC/50mA
power supply for transmitter. √√
⑨Shows power supply: Null indicates 100～240VAC power supply, and “24VDC” indicates
20～32VDC/AC power.

TECHNICAL SPECIFICATION
zInput:
Thermocouples: (with J1 module)
K, S, R, E, J, T, B, N and WRe5-WRe26
Two-wire RTDs: (with J2 module that supports 2 inputs)
PT100, Cu50, 0~80 ohm, 0~400 ohm
Three-wire RTDs: (with J0 module that supports 1 inputs)
PT100, Cu50, 0~80 ohm, 0~400 ohm
Linear mV voltages: (with J1 module)
0~20mV, 0~60mV, 0~100mV, 0~1V
Linear voltage: (with J3 module)
0~1V, 0~3V, 0~5V, 1~5V etc.
Linear current: (with J4 module)
0~12mA, 0~20mA, 4~20mA etc.
Extraction calculation input: (with J3 voltage and J4 current input module)
1~5V, 4~20mA etc.
Two-wire transmitter inputs: (with J5 module that provides 24VDC power supply)
Connect to 4~20mA two wires transmitter
zMaximum lead wire resistance for RTD input:
2-wire type RTDs:
2 ohm for Pt100 or 0~400 ohm input ;1 ohm for Cu50 and 0-200 ohm input；
3-wire type RTDs:
5 ohm
zMeasurement range：
K(0~1300℃), S(0~1700℃), R(0~1700℃), T(-200~+350℃), E(0~1000℃),
J(0~1200℃), B(0~1800℃), N(0~1300℃), WRe5-WRe26(0~2300℃),
Pt100(-200~+800℃), Cu50(-50~+150℃)
Linear input：-1999~+9999 set by user
zMeasurement accuracy:
±0.2%FS±1digit / ±0.3%FS±1digit (only for Cu50)
Note 1: For thermocouple inputs with internal cold junction compensation, 1℃CJC error
should be taken into consideration. For those with Cu resistor, ice point or
thermostat bath compensation, the accuracy is as above.
Note 2: Accuracy is not guaranteed between 0 and 600℃for type B thermocouple input.

zTemperature drift :
≤0.01%FS/℃(typical 50ppm/℃)
zElectromagnetic compatibility:
IEC61000-4-4, ±4KV/5KHz; IEC61000-4-5, 4KV
zIsolation withstanding voltage:
Between power, relay contact and signal terminals ≥2300VDC;
Between isolated eletroweak signal terminals ≥600VDC
zResponse time：
≤1.5 seconds（if digital filter parameter is set as 0 or 1）
zAutomatic pilot time interval：
Approx. 1.2s or 2s configurable
zAlarm function：
High and low alarm，configurable separately for each channel
zAlarm output:
Relay contact output（NO or NC）：250VAC/1A or 30VDC/1A
No contact discrete output（NO or NC）：250VAC/0.3A(transient current 1A)
zPower supply:
100~240VAC/50Hz, 24VDC
zPower consumption：≤6W
zWork ambience：Temperature -10~+60℃, humidity ≤90%RH

TERMINAL LAYOUT AND WIRING
This graph is for uprigh
t
instruments with
dimension A, C, E.
For instruments with
dimension B, F, just
clockwise rotate the
graph for 90 degree,
and the terminal
numbers keep
unchanged.
A
U1
M1
M2/MIO
A
UX
A
LM
COMM
A
L2
1
2
3
4
5
6
7
8
9
10
11
12
15
16
17
18
19
20
13
14
A
L1
A
U2
COM
COM
N/CN/O
N/ON/O
+
+
A
B
+
100-240VAC~
+
+
OUTP/M3
COMCOM
N/O
N/C
N/ON/O
COM
N/C
N/O
+
+
COM
COM
N/ON/O
N/O
N/C
+
+
IN3
IN2
IN1
CJC
+
+
OP2/IN6
OP1/IN5
IN4
IN3
IN2
IN1
Thermocouple wiring:
When wiring a thermocouple input, the compensation wire should be qualified and directly
connect to the corresponding terminals in correct direction. When M1 module is installed in
J1 socket, a Cu50 resistor can be connected between terminal 17 and 20 to compensate the
cold junction; short connection between terminal 17 and 20 can realize ice-point
compensation.
Two-wire RTD wiring:
RTD can select two-wire or three-wire method by B of “AF” parameter. Two-wire method
enable to input two channel signals in one module, but user has to measure and calculate the
resistance of the wire. To apply two-wire method, the J2 module should be installed and the
resistance of every wire should be less than 2ohm.
AI-702M/704M/706M can measure the lead wire resistance of two-wire method and save it to
parameter “Sc”. However, the lead wire resistance changes as the temperature changes.
If the lead wires has the same ambient temperature as that of the instrument and no other
resistor series connects to the lead wire, the indicators can compensate the resistance
change by measuring the ambient temperature (compensation coefficient is 0.004/℃);
otherwise, two-wire method is not recommended.
Three-wire RTD wiring:
Three-wire method is a traditional wiring method requiring that the resistance of the three wire
be equal. One “J0” module supports 1 three-wire RTD. Three-wire method provides higher
measurement accuracy.

FRONT PANEL AND OPERATIONS
○
1Upper display window
○
2Lower display window
○
3Set key
○
4Data shift key (also for switching between
manual/auto cyclic display)
○
5Data decrease key (also for switch to
display the previous channel)
○
6Data increase key (also for switch to
display the next channel)
○
510 LED indication lights.
“MAN” on: Means manual circular display,
“MAN” off: Means auto circular display.
MIO, OP1, OP2, AL1, AL2, AU1, AU2
indicate the input/output action of the
corresponding module. “COM” on means communicating with the host computer.
Basal operation description
1. Switch display channel:
Press to display next channel, and press to display previous channel. Press
can switch between auto cyclic display and manual display.
2. Parameter setting:
When the parameter lock is unlocked, press and hold for about 2 seconds until
parameter is displayed. At this moment, press in short; all parameters will be
displayed one by one. When the parameters are set and the parameter lock is locked,
press can access Field Parameter Table. The value of a parameter can be
modified by , or . Press to go to next parameter. Press and hold
can return to the previous parameter. Press + can exit parameter setting
status.
3. Alarm display:
The lower display window shows channel number. If high or low alarm occurs, the first
digit from the left of lower display window will show “H” or “L”, and flickers, and if over
range occurs (for example, wire broken for thermocouple input), the upper display
window will show high or low limit valve, and the lower display window flickers.
If only 2 input channels configured, then the upper and lower display window will show
the input values of channel 1 and 2 respectively. When over range occurs, the
corresponding display window will flickers.
Lead wire resistance compensation for 2-wire RTD input:
Offset value (parameter “Sc”) need to be set to counteract lead wire resistance for 2-wire
type RTD like Pt100 or Cu50. This offset value can be set automatically by the following
procedures:
1. Short connect 2 wiring terminals on the RTD sensor side
2. Set parameter “Loc” to 808, and then press until “A” appears on the first digit of
lower display window.
①
②
③
④
MAN PRG COM
MIO AL1 AL2OP1 OP2
A/M RUN/HOLD
AU2
STOP
AU1
⑤
⑥
⑦
PV
SV
AI

3. Wait until “A” disappears, and then removes the short wire, and set “Loc” to 0 or 1.
4. Now, the instrument comes back to normal measurement display mode, and the setting
of parameter “Sc” is finished.
The unit of Sc is 1/20000 of the scare of the corresponding RTD. At 0℃, the total resistance
of the two lead wire of Pt100 or 0~400ohm should be less than 4ohm, and that of Cu50
should be less than 2ohm. Otherwise, wire resistant compensation will not function. The
smaller the resistance of the lead wire, can provide more accurate measurement.
4. DIN rail mounted type
DIN mounted type (dimension E5) has no display window. It can input analog signals or
input/output on-off signals for host computer or PLC, and it can also work as a two-channel
programmable re-transmitter.
E5 dimension instrument has one LED indication light. When the instrument is
communicating with the host computer, the light flashes with light on time different to light off
time. When the instrument hasn’t received signal from the host computer for 6 seconds, the
indication light should flash with the same light on time and light off time.
It means:
zThat the on-off period is as long as 1.6 second means no communication and no alarm (it
can be treated as normal);
zThe light flashing with period 0.6 second means no communication and general error
occurs.
zThe light quickly flashing with period 0.3 second means no communication and severe
error such as input over range occurs.
zThe light keeping off means the instrument power off or damaged; the light keep on
(longer than 8 seconds) means the instrument power on but damaged.
The parameters of E5 dimension instrument can be set by connecting external display to the
1394 socket.
Note: The 1394 socket of the instrument only supports Yudian external display.
The instrument can be connect PC or PLC to monitoring or capture the data. We can provide
the FREE protocol for user or order our monitoring software-AIDCS. Please contact Yudian
Sales Dept. for more detail.
5. Dry Bulb, Wet Bulb Humidity Measurement
By connecting 2 units of 3 wires PT100 for input, is can become the dry bulb, wet bulb
humidity measurement.
1. Install J0 module(RTD input module) in M1 and M2 slot. Set Sn1=22, Sn2=42.
2. Atmospheric pressure and wind speed defined by parameter “Po” and “SPEd”
3. Tuning humidity first with the bulb wrapped in wet muslin, after the reading stabled
4. Adjust parameter Sc2 to make the reading reach 100%,
5. Can remove the wet muslin after the adjustment.
6. Set parameter dIP1=1, dIP2=0, resolution will 0.1℃and 1%RH

PARAMETER DESCRIPTION
* Xmeans channel number. It can be 1~2, 1~4, 1~6 for AI-702M, 704M and 706M.
Parameter Name Remarks Setting range
H.ALx High limit alarm
x channel high alarm on when PVx (the present value of x
channel)>H.ALx;
Alarm releases when PVx<H.AL - dFx.
Set H.ALx maximum value will disable function
-1999~+9999 ℃or
defined unit
L.ALx Low limit alarm
x channel low alarm on when PVx<L.ALx;
Alarm releases when PVx>L.ALx + dfx.
Set L.ALx minimum value will disable function
dFx Dead band
dF is set to avoid high frequent alarm on/off actions
caused by process input fluctuation.
0~999.9℃or
0~9999 units
Snx Input
specification
Sn Input spec. Sn Input spec.
0 K 1 S
2 R 3 T
4 E 5 J
6 B 7 N
8 WRe3-WRe25 9 WRe5-WRe26
10 Extended
input spec. 11~18 Spare
19 BA2 (JPt100) 20 Cu50
21 Pt100 22 Pt100
(-100.00~+300.00) ℃
23~24 Spare 25 0~75mV
26 0~80ohm 27 0~400ohm
28 0~20mV 29
0~100mV, 0~5V (J3);
0~20mA (J4)
30 0~60mV 31 0~1V
32
0.2~1V ;
two-wire
re-transmitter
(J5)
33 1~5V voltage (J3)
4~20mA current (J4)
38 Extraction for
range: 0.2~1V 39
Extraction for range:
1~5V (J3)
4~20mA (J4)
Note: Input spec. should be compatible with input module.
For those spec. not given module type, thermocouple and
mV inputs should use “J1” module, J2 module for two-wire
resistor inputs, and J0 module for three-wire resistor
inputs.
When Sn3=40, the input of channel 3 is the product of
those of channel 1 and channel 2, can use as
multiplication function.
Sn3, Sn4, or Sn5 =41, which means its input is the sum of
the inputs of its whole previous channels.
For example, when Sn5=41, the input of channel 5 is the
sum of the inputs of channel 1 to 4.
When Sn3=42, then, PV3=PV1-PV2, can use as
subtraction function.
0 ~ 39

dIPx Decimal point
position
dIPx is set to select display resolution for channel x
for linear inputs, the corresponding display resolution of
dIP=0,1,2,3 are 0, 0.0, 0.00 and 0.000
for thermocouple or RTD inputs, when dIP=0, the display
resolution is 1℃; when dIP=1, the resolution is 0.1℃.
Note: dIP only affects the display, and has no effect on
internal data.
0~3
dILx Scale low limit
dIL and dLH define the corresponding scale range of linear
inputs such as mV, 0~5V, 1~5V, 0~10mA, 4~20mA.
When the temperature input is retransmitted, dIL/dIH also
defined the low/high limit of temperature.
For example, a pressure transmitter transfers the pressure
to standard 1~5V signal and sends to input channel 1.
The input of 1V indicates the pressure=0, and 5V indicates
the pressure=1MPa, and expected display resolution is
0.001MPa. Then the parameters should be set as below:
Sn1=33, dIP1=3, dIL1=0.000, dIH1=1.000
-9990~+30000
units or 0.1℃
dIHx Scale high limit
Scx Input offset
For thermocouple or three-wire RTD inputs, the units of Sc
is 0.1℃. For example, when Sc=-100, the actual
offset=-10℃, then the measured temperature will be 10℃
lower than that when Sc=0.
For two-wire RTD inputs, the actual offset = (Sc x signal
unit). The signal unit of Pt100 or 0~400ohm input is
0.02ohm, and that of Cu50 or 0~240ohm input is
0.012ohm. For example, when Sc=-50, input type is
Pt100, (-50 x 0.02ohm), then the actual offset= -1.
-1999~+4000
units or 0.1℃
dLx Digital filter
The value of dF will determine the ability of filtering noise.
dL=0, no filtering;
dL=1, filtering with mean;
dL=2~40, filtering with mean and integral.
When a large value is set, the measurement input is
stabilized but the response speed is slow. Generally, it
can be set to 1 to 3.
If great interference exists, then you can increase
parameter dF gradually to make momentary fluctuation of
measured value less than 2 to 5.
When the instrument is being metrological verified, dF can
be set to 0 or 1 to shorten the response time.
0~40

ALPx Alarm output
From right side to left side, the first, second digit of AOP
respectively indicate the alarm output assignment of H.AL,
L.AL, as below:
ALPx = _______ _______
L.AL H.AL
Regarding to parameter value: 0 means no output.
1,2,3,4,5,6,7 respectively indicate alarm output to OP1,
OP2, AL1, AL2, AU1, AU2 and MIO. Shown as below:
L.AL H.AL
No alarm 0 0
OP1 1 1
OP2 (L5 need) 2 2
AL1 3 3
AL2 (L5 need) 4 4
AU1 5 5
AU2 (L5 need) 6 6
MIO 7 7
For example:
ALP1=43, low limit alarm (L.AL) of channel 1 output to AL2,
ALP2=53, low limit alarm (L.AL) of channel 2 output to AU1,
and both high limit alarms(H.AL) of both channel are sent to
AL1.
0~77
Cn Number of
input channels
Define actual number of input channels.
When Cn=2, the lower window display the present value of
channel 2 instead of the channel number.
702M: 0~ 2
704M: 0~ 4
706M: 0~ 6
AF
Advanced
function
selection
AF is used to select advanced function. The value of AF
is calculated as below:
AF=Ax1 + Bx2 + Cx4 + Dx8 + Ex16
A=0, Slow cyclic display;
A=1, Fast cyclic display.
Above setting only affects display and has no effect on
internal scan speed and alarm response time.
B=0, RTD input use two-wire wiring;
B=1, RTD input use three-wire wiring.
C=0, Only channel 2 is retransmitted to COMM port;
C=1, All input channels are cyclically retransmitted, and
the retransmission time interval on every channel is about
3 seconds. The output range of all channels are defined
by dIL2 and dIH2 only.
D=0, Normal;
D=1, All low limit alarms are changed to high limit alarm.
E=0, Normal;
E=1, Set M2(MIO) and M3(OUPT) support one channel
input only.
For example, to set a AI-702M with 2 inputs, slowly cyclic
display, channel 1 input from three-wire RTD (J0 module
on M1 socket), channel 2 input from thermocouple (J1
module on M2 socket), current retransmission of channel
2 outputted to COMM port, the AF parameter should be
set as below:
A=0,B=1,C=0,D=0, then AF=19.
0~31

nonc NO/NC
selection
Single channel relay module provides both normal open
and normal close output, while dual relay output module
only provides NO output.
If L5 dual real installed, set nonc=0, all in NO status, set
nonc=127, all in NC status.
However, by parameter “nonc”, the NO output can be
changed to NC output.
nonc = Ax1 + Bx2 + Cx4 + Dx8 + Ex16 + Fx32 + Gx64
A,B,C,D,E,F,G respectively set NO/NC output of OP1,
OP2, AL1, AL2, AU1, AU2 and MIO. 0 means the
corresponding output is NO, and 1 means NC output.
0 ~63, 127
OPn
Select the
channel to be
retransmitted
OPn=0, OUTP port is for alarm output.
OPn=1~6, OUTP port is used for retransmission of
channel OPn.
OPn=7, Compare with all channel, and retransmission the
maximum value’s channel to OUTP
OPn=8, Compare with all channel, and retransmission the
minimum value’s channel to OUTP
0~8
OPL
Low limit of
retransmission
current
When OUTP works as re-transmitter, OPL/OPH define the
low/high limit of re-transmisson. The unit is 0.1mA.
For example, to transmit the channel 1 input 0~600℃into
4~20mA output, the parameters should be set as below:
dIL1=0, dIH1=600, OPn=1, OPL=40, OPH=200
0~110
OPH
High limit of
retransmission
current
0~220
Po Atmospheric
pressure
Defined atmospheric pressure, when dry bulb, wet bulb
humidity measurement was activated. Unit = KPa 1~120.0
SPEd Wind speed
Defined wind speed, when dry bulb, wet bulb humidity
measurement was activated. Unit = m/S 0.01~10.00
Addr Communication
address
Every instrument in the same communication line should
be assigned to different communication address. The
communication applies AIBUS protocol. Every input
channel takes one address. For example, if Cn=3 and
Addr=10, then the communication address 10~12 are
assigned to the instrument.
0 ~100
bAud Baud rate
When COMM module interface is used for communication,
bAud defines the baud rate with range 300~19200bit/s.
When linear current output module is installed in COMM
socket, and bAud is set to 0~220, the COMM output can
work as retransmission output. It can retransmit channel
2 input or cyclically retransmit all input channels into linear
current. bAud defines the output high limit, and Addr
defines the low limit. The unit is 0.1mA. For example,
to output 4~20mA current, Addr should be set to 40, and
bAud=200.
0 ~19.2K
Loc Parameter lock
Loc=0, Allow to display and modify the field parameters,
which is defined in EP1~EP12.
Loc=1, Can display the field parameters, but can’t modify
them.
Loc=808, Allow to display and set all parameters.
0 ~9999

EP1-12 Field
parameter
When configuration of the instrument is completed, most
parameters will not need to be set by field operators.
Furthermore, field operators may not understand many
parameters, and may probably set parameters incorrectly
by mistake and make the instrument unable to work.
EP1~EP12 define 0~12 field parameters for operators’ use
in parameter table. Their parameter values are parameters
except parameter EP itself, like H.AL1, L.AL1, .etc,
Parameters from EP1 to EP12 can define 12 field
parameters at most, if the number of field parameters is
less than 12(sometimes even none), it is necessary to
define field parameters from EP1 to EP12 in order, the first
unused EP should be set to none.
For example, six parameters of H.AL1 to H.AL6 (all
channels’ upper alarm) are need to be modified by field
operators, the parameter EP can be set as following:
EP1=H.AL1、EP2=H.AL2、EP3=H.AL3、EP4=H.AL4 、
EP5=H.AL5 、EP6=H.AL6 、EP7=nonE
Sometimes field parameters are not needed after we finish
adjusting the instrument, we can set EP1 parameter an
nonE, then set Loc to 0 or 1.
NonE~bAud