Siemens Simatic S7-300 User manual

Copyright 2003 by Siemens AG
A5E00213444-02
Product Information on the Manual
Edition 04.2003
S7-300 Module Specifications, Edition 11/2002, (A5E00105505-02)
Introduction
The S7-300 product family has been enhanced and improved. This document
contains details of the features and technical specifications of the modules.
Contents
Section Contents Page
1SM 321 digital input module; DI 16 DC 24 V;
with hardware interrupt and diagnostic interrupt, clocked;
(6ES7 321-7BH01-0AB0)
2
2SM 331 analog input module; AI 8 14 Bit High Speed,
clocked; (6ES7 331-7HF00-0AB0) 14
3Analog Output Module SM 332; AO 4 16 Bit, clocked; (6ES7
332-7ND01–0AB0) 25

2ProductInformation on the Manual S7-300 Module Specifications, Edition 11/2002
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1 SM 321 digital input module; DI 16 DC 24 V;
with hardware interrupt and diagnostic interrupt,
clocked; (6ES7 321-7BH01-0AB0)
Order number
6ES7 321-7BH01-0AB0
Characteristics
The SM 321; DI 16 DC 24 V; with hardware and diagnostic interrupts has the
following features:
S16 inputs, isolated in groups of 16
S24 VDC rated input voltage
SInput characteristic curve according to IEC 61131, Type 2
SSuitable for switches and two / three / four-wire BEROs (proximity switches)
S2 short-circuit-proof sensor supplies for 8 channels each
SExternal redundant power supply possible to supply sensors
S“Sensor supply (Vs)”status display
SGroup error display
SSupports clocked operation
SSupports the function “Reparameterization in RUN mode”
SProgrammable diagnostics
SProgrammable diagnostic interrupt
SProgrammable hardware interrupt
SProgrammable input delays

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Terminal connection diagram and block diagram of the
SM 321; DI 16 DC 24 V
Status display –green
Channel number
Backplanebus
interface
L+
M24 V
SF
Vs
Vs
Sensor supplies Vs - green
M
M
L+
Vs
Vs
L +
Fault indicator –red
Wire break
detection
Wire break
detection
Figure 1 Module view and block diagram of the SM 321; DI 16 DC 24 V

4Product Information on the Manual S7-300 Module Specifications, Edition 11/2002
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Terminal assignment diagram for the redundant supply of sensors
The figure below shows how sensors can additionally be supplied by means of Vs
with a redundant voltage source –for example, via another module.
Vs
M
L+ 1 L+
2 L+
to the sensors
±
Digital input
module
Short-circuit-
proof driver
Figure 2 Terminal assignment diagram for the redundant supply of sensors of the SM
321; DI 16 DC 24 V
Terminal assignment diagram of the resistor wiring of the sensors
To detect a wire break, it is necessary to wire sensor contacts with a resistor.
L +/ Vs E x.x
15 kW... 18 kW
Figure 3 Terminal assignment diagram of the resistor wiring of the sensors of the SM
321; DI 16 DC 24 V

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Technical specifications of the SM 321; DI 16 DC 24 V
Dimensionsand Weight
Dimensions W H D
(in millimeters) 40 125 117
Weight Approx. 200 g
Data for Specific Module
Supports clocked
operation Yes
Reparameterization in RUN
mode possible Yes
SBehavior of non paramete-
rized inputs Supply the las valid process value before
parameterization
Number of inputs 16
Length of cable
SUnshielded
SShielded max. 600 m max. 1000 m
Voltages, Currents, Potentials
Power rated voltage of the
electronics and sensor L+ 24 VDC
SReverse polarity protection Yes
Number of inputs that can be triggered simultaneously
SHorizontal configuration
Up to 60 _C 16
SVertical configuration
Up to 40 _C 16
Isolation
SBetween channels and
backplane bus Yes
Permitted potential difference
SBetween the different
circuits 75 VDC / 60 VAC
Insulation tested with 500 VDC
Current consumption
SFrom the backplane bus max. 130 mA
SFrom load voltage L +
(without sensor supply VS)max. 90 mA
Power dissipation of the module typ. 4 W
Status, interrupts, diagnostics
Status display
SInputs Green LED per channel
SSensor power supplies (Vs) Green LED per output
Interrupts
SHardware interrupt
SDiagnostic interrupt Parameters can be
assigned
Parameters can be
assigned
Diagnostic functions Parameters can be
assigned
SGroup error display Red LED (SF)
SDiagnostics information
read-out Possible
Monitoring for
SWire break Yes, for I < 1 mA
Sensor Power Supply Outputs
Number of outputs 2
Output voltage
SWith load min. L+ (–2.5 V)
Output current
SRated value
SPermitted range 120 mA 0 to 150 mA
Additional (redundant) supply Permitted
Short-circuit protection Yes, electronic
Data for Selecting a Sensor
Input voltage
SRated value
SFor signal “1”
SFor signal “0”
24 VDC
13 to 30 V
From *30 to + 5 V
Input current
SAt signal “1”typ. 7 mA
Input characteristic curve According to IEC
61131, type 2
Connection of Two-Wire
BEROs
SPermitted bias current Possible max. 2 mA
Resistor wiring of the sensor for
wire break monitoring 10 to 18 kOhm
Time/Frequency
Internal preparation time for
status processing (in
non-clocked operation)
SEnabling of hardware and
diagnostic interrupt max. 40 ms
Input delay
SParameters can be
assigned
SRated value
Yes
typ.
0.1/0.5/3/15/20 ms

6Product Information on the Manual S7-300 Module Specifications, Edition 11/2002
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1.1 Clock synchronization
Characteristics
Reproducible response times (i.e. times of the same length) are achieved in
SIMATIC by means of an equidistant DP bus cycle and the synchronization of the
following free-running individual cycles:
SFree-running cycle of the user program. On account of cyclic program branches
the length of the cycle time may vary.
SFree-running, variable DP cycle on the PROFIBUS subnet.
SFree-running cycle on the DP slave backplane bus.
SFree-running cycle at signal conditioning and conversion in the electronic
modules of the DP slaves.
With equidistance the DP cycle runs with the same clock pulse and for the same
length. The priority classes of a CPU (OB 61 to OB 64) and the clocked I/Os are
synchronized with this clock pulse. The I/O data are thus transferred at defined,
fixed intervals (clock synchronization).
Prerequisites
SThe DP master and DP slave must support clock synchronization. STEP 7 as of
Version 5.2 is required.
Mode: clock synchronization
The following conditions apply to clocked mode:
Filter and processing time TWE between the actual values being read in
and made available in the transfer buffer
(the specified value for TWE applies regardless of the activation of the
hardware interrupt or diagnosis)
255 to 345 ms
Includes an input delay of 100 ms
TDPmin 2.5 ms
Diagnostic interrupt max. 4 x TDP
Note
In clocked mode, the input delay of the inputs is always 100 ms, regardless of the
input delay parameterized in STEP7.

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Further information
You will find further information on clock synchronization in the online help system
of STEP 7, in the manual ET 200M Distributed I/O System and in the manual
Clock Synchronization.
1.2 Parameterizing the SM 321; DI 16 DC 24 V
Parameter assignment
Section 3.3 of the reference manual describes how digital modules are generally
parameterized.
Parameters of the SM 321; DI 16 DC 24 V
You will find an overview of the parameters that can be set for the SM 321;
DI 16 DC 24 V, together with the default settings, in the following table.
The default settings apply if you have not performed parameter assignment in
STEP 7.
Table 1 Parameters of the SM 321; DI 16 DC 24 V
Parameter Value Range Default
Settings Para- meter
Type
Scope
Enable
SDiagnostic interrupt
SHardware interrupt Yes/no Yes/no No No Dynamic Module
Input delay/voltage type 0.1 ms (DC)
0.5 ms (DC)
3 ms (DC)
15 ms (DC)
20 ms (DC/AC)
(DC) Static Module
Diagnosis
SSensor supply missing
SWire break Yes/no Yes/no No No Static Channel
group
Trigger for hardware interrupt
SRising edge
SFalling edge Yes/no Yes/no No No Dynamic Channel
group
Assignment of the sensor supplies to channel groups
The module’s two sensor supplies supply two channel groups: inputs 0 to 7 and
inputs 8 to 15. In these channel groups you also parameterize the diagnosis for the
sensor supply.

8ProductInformation on the Manual S7-300 Module Specifications, Edition 11/2002
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Assigning interrupt parameters to channel groups
The table below shows the channels that can be combined to form a channel
group if you would like to parameterize interrupt processing.
You will need the channel group number to set the parameters in the user program
with an SFC.
Table 2 Assignment of the interrupt parameters to the inputs of the SM 321;
DI 16 DC 24 V
Parameter... Can Be Set in Following
Channel Groups Channel Group Number
Hardware interrupt
(for falling, rising or both types of pulse
edges)
0 and 1
2 and 3
4 and 5
6 and 7
8 and 9
10 and 11
12 and 13
14 and 15
0
1
2
3
4
5
6
7
Diagnostic interrupt
(if there is no sensor supply) 0 to 7 8 to 15 -
Wire break 0 and 1
2 and 3 0 1
:
Tolerances of the programmable input delays
Table 3 Tolerances of the input delays of the SM 321; DI 16 DC 24 V
Programmed Input delay Tolerance
0.1 ms 60 to 140 ms
0.5 ms 400 to 900 ms
3 ms (preset) 2.6 to 3.3 ms
15 ms 12 to 15 ms
20 ms 17 to 23 ms

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1.3 Behavior and diagnostics of the SM 321; DI 16 DC 24 V
Effect of operating and mode supply voltage on the input values
The input values of the SM 321; DI 16 DC 24 depend on the operating mode of
the CPU and the supply voltage of the module.
Table 4 Dependencies of the input values of the operating mode of the CPU and the
supply voltage L+ of the SM 321; DI 16 DC 24 V
CPU Operating State Power Supply L+
to Digital Module Input Value of Digital Module
POWER ON RUN L+ exists Process value
L+ missing 0 signal
STOP L+ exists Process value
L+ missing 0 signal
POWER OFF –L+ exists –
L+ missing –
Diagnostic messages of the SM 321; DI 16 DC 24 V
The table below provides an overview of the diagnostic messages of the SM 321;
DI 16 DC 24 V.
Table 5 Diagnostic messages of the SM 321; DI 16 DC 24 V
Diagnostics Message LED Scope of the
Diagnostics Parameters can be
assigned
Sensor supply missing SF Channel group
Wire-break SF Channel group Yes
Module not parameterized SF Channel group
External auxiliary supply missing SF Module
Internal auxiliary power missing SF Module
Fuse blown SF Module
Incorrect parameter on module SF Module
Watchdog timeout SF Module No
EPROM error SF Module
RAM error SF Module
Hardware interrupt lost SF Module

10 ProductInformation on the Manual S7-300 Module Specifications, Edition 11/2002
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Note
A prerequisite for detecting the errors indicated by programmable diagnostic
messages is that you have assigned parameters to the digital module accordingly
in STEP 7.
Behavior upon failure of the supply voltage
The failure of the supply voltage of the SM 321; DI 16 DC 24 is always indicated
by the SF LED on the module. Furthermore, this information is made available on
the module.
The input value is initially held for 20 to 40 ms before the 0 signal is transferred to
the CPU. Supply voltage dips < 20 ms do not change the process value (see Table
4).
Triggering of the diagnostic interrupt depends on the parameter assignment (see
Section 1.4).
Failure of the supply voltage with redundant incoming supply for the sensor
supply
Note
If an external redundant source is applied simultaneously to the sensor supply
(Vs), a failure in the internal sensor supply causes a failure of the internal and/or
external sensor supply and/or a blown fuse to be indicated instead of a regular
sensor supply failure.
Short-circuit of sensor supply Vs
Irrespective of the parameter assignment, the corresponding Vs LED goes out if a
short-circuit of the sensor supply Vs occurs.

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Causes of errors and remedial action
Table 6 Diagnostic messages of the SM 321; DI 16 DC 24 V, causes of errors and
remedial action
Diagnostics
Message Possible Error Cause Remedy
Missing sensor supply Overload of sensor supply Eliminate overload
Short circuit of sensor supply to M Eliminate short circuit
External auxiliary
supply missing Power supply L+ to module missing Feed supply L+
Internal auxiliary Power supply L+ to module missing Feed supply L+
supply missing Fuse in module defective Replace module
Fuse blown Fuse in module defective Replace module
Incorrect parameters
in module One parameter or the combination of parameters is not plausible Reassign module parameter
Time monitoring
triggered (watch dog) Temporary high electromagnetic interference Eliminate interference
Module defective Replace module
EPROM error Temporary high electromagnetic
interference Eliminate interference and switch on/off power supply of CPU
Module defective Replace module
RAM error Temporary high electromagnetic
interference Eliminate interference and switch on/off power supply of CPU
Module defective Replace module
Hardware interrupt lost The module cannot send an interrupt,
since the previous interrupt was not
acknowledged; possible configuration
error
Change interrupt processing in CPU
and reconfigure module parameters, if
required
The error continues until the module is
configured with new parameters
Module not
parameterized Problem at startup Reassign module parameter

12 ProductInformation on the Manual S7-300 Module Specifications, Edition 11/2002
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1.4 Interrupts of the SM 321; DI 16 DC 24 V
Introduction
This section describes the interrupt behavior of the SM 321; DI 16 DC 24 V. The
following interrupts exist:
SDiagnostic interrupt
SHardware interrupt
The OBs and SFCs mentioned below can be found in the online Help for STEP 7,
where they are described in greater detail.
Enabling interrupts
The interrupts are not preset –in other words, they are inhibited without
appropriate parameter assignment. Assign parameters to the Interrupt Enable in
STEP 7 (refer to Section 1.2).
Diagnostic interrupt
If you have enabled diagnostic interrupts, then active error events (initial
occurrence of the error) and departing error events (message after
troubleshooting) are reported by means of an interrupt.
The CPU interrupts the execution of the user program and processes the
diagnostic interrupt block (OB 82).
In the user program, you can call SFC 51 or SFC 59 in OB 82 to obtain more
detailed diagnostic information from the module.
The diagnostic information is consistent until such time as OB 82 is exited. When
OB 82 is exited, the diagnostic interrupt is acknowledged on the module.
Hardware interrupt
The SM 321; DI 16 DC 24 V can trigger a hardware interrupt for every channel
group at a rising edge, a falling edge, or at both edges of a signal status change.
Perform parameter assignment one channel group at a time. It can be modified at
any time (in RUN mode using the user program).
Pending hardware interrupts trigger hardware interrupt processing in the CPU
(OB 40). The CPU interrupts the execution of the user program or of the priority
classes with low priority.
You can set in the user program of the hardware interrupt OB (OB 40) how the
programmable logic controller has to react to an edge change. When the hardware
interrupt OB is exited, the hardware interrupt is acknowledged on the module.
The module can buffer one interrupt per channel. If no higher priority run-time
levels are waiting to be processed, the buffered interrupts (of all modules) are
serviced one after the other by the CPU according to the order in which they
occurred.

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Hardware interrupt lost
In an interrupt has been buffered for a channel and another interrupt occurs on that
channel before it has been processed by the CPU, a diagnostic interrupt “hardware
interrupt lost”is triggered.
More interrupts on this channel are not acquired until processing of the interrupt
buffered on this channel has been executed.
Interrupt-triggering channels
The start information of OB 40 in the OB40_POINT_ADDR variable indicates
which channel triggered the hardware interrupt. Figure 4 shows the assignment to
the bits of the local data double word 8.
Byte Variable Data type Description
6/7 OB40_MDL_ADDR WORD B#16#0 Address of the
interrupt-triggering module
As of
8OB40_POINT_ADDR DWORD See Figure 4 Indication of the interrupt-triggering inputs
1Bit no.
3130 29 282726 LD 8
1
LB 8
25 24
Edge change: channel 2
Edge change: channel 0
Edge change: channel 7
LB 11
0
1
Edge change: channel 1
11
LB 10
1
2322 21 201918 1
LB 9
17 16
11
Edge change: channel 10
Edge change: channel 8
Edge change: channel 15
Edge change: channel 9
Reserved
Figure 4 Start information of OB 40: which event triggered the hardware interrupt

14 ProductInformation on the Manual S7-300 Module Specifications, Edition 11/2002
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2 Analog input module SM 331; AI 8 14 Bit High Speed,
clocked; (6ES7 331-7HF00-0AB0)
Order number
6ES7 331-7HF00-0AB0
Characteristics
The SM 331; AI 8 14 Bit High Speed has the following features:
S8 inputs in 4 channel groups
SMeasured-value resolution 13 bits + sign
SMeasuring method selectable per channel group:
–Voltage
–Current
SArbitrary measuring range selection per channel group
SProgrammable hardware interrupt
SProgrammable diagnostics
SProgrammable diagnostic interrupt
SSupports clocked operation
SIsolated against the backplane bus interface
SIsolated from the load voltage (not in the case of the 2-wire transmitter)

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Terminal connection diagram and block diagram of the SM 331;
AI 8 14 Bit High Speed
M3–
Mana
Group error display –red Voltage measurement,
current measurement
M0+
M0*
M1+
Mana
SF
Internal
supply
M
L+
Multiplexer Measurement range
modules
ADC
Isolation
Backplane bus
interface SF
CH0
CH1
M1*
M2+CH2
M2*
M3+CH3
M4+
M4*
M5+CH4
CH5
M5*
M6+CH6
M6*
M7+CH7
M7*
24 V
1
2
3
4
5
6
7
9
8
10
11
12
13
14
15
16
17
18
19
2
0
Figure 5 Module view and block diagram of the SM 331; AI 8 14 Bit High Speed

16 Product Information on the Manual S7-300 Module Specifications, Edition 11/2002
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Technical specifications of the SM 331; AI 8 14 Bit High Speed
Dimensionsand Weight
Dimensions W H D
(in millimeters) 40 125 117
Weight Approx. 230 g
Data for Specific Module
Supports clocked operation Yes
Number of inputs 8
Length of cable
SShielded max. 200 m
Voltages, Currents, Potentials
Rated supply voltage of the
electronics L + 24 VDC
SReverse polarity
protection Yes
Power supply of the
transmitters
SSupply current max. 30 mA (per channel)
SShort-circuit-proof Yes
Isolation
SBetween channels and
backplane bus Yes
SBetween the channels No
SBetween channels and
power supply of the
electronics
Yes
Permitted potential
difference
SBetween inputs and
MANA (UCM)
–At signal = 0 V
–Not for 2-wire
transmitter
11 VDC / 8 VAC
SBetween the inputs
(ECM) 11 VDC / 8 VAC
SBetween MANA and
Minternal (UISO)75 VDC / 60 VAC
Insulation tested with
SChannels against
backplane bus and load
voltage L +
500 VDC
Current consumption
SFrom the backplane bus max. 100 mA
SFrom load voltage L +
(without 2-wire
transmitter)
max. 50 mA
Power dissipation of the
module typ. 1.5 W
Analog value generation
Measuring principle Instantaneous value
conversion
Integration time/conversion
time/ resolution (per
channel)
SParameters can be
assigned Yes
SBasic conversion time
per channel 52 ms
SResolution (incl.
overrange) 14 bits
SNoise suppression for
frequency f1 in Hz None 400 60 50
SBasic execution time of
the module (depending
on the number of
channels enabled)
0.42 ms
Suppression of interference, Limits of Error
Noise suppression for f = n (f1 "1 %),
(f1 = interference frequency) n= 1,2 ...
SCommon-mode
interference
(UCM < 11 VSS)
> 80 dB
SSeries-mode
interference (peak value
of interference < rated
value of input range)
> 40 dB
Crosstalk between the
inputs > 65 dB
Operational limit (in the entire temperature range,
with reference to the input range)
SVoltage input "1 V "0.3 %
"5 V "0.4 %
"10 V "0.3 %
1 to 5 V "0.4 %
SCurrent input "20 mA "0.3 %
0 to 20 mA "0.3 %
4 to 20 mA "0.3 %
Basic error limit (operational limit at 25 _C, with reference
to the input range)
SVoltage input "1 V "0.2 %
"5 V "0.25 %
"10 V "0.2 %
1 to 5 V "0.25 %
SCurrent input "20 mA "0.2 %
0 to 20 mA "0.2 %
4 to 20 mA "0.2 %

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Temperature error (with
reference to the input range) "0.004 %/K
Linearity error (with
reference to the input range) "0.03 %
Repeat accuracy (steady
state at 25 _C, with
reference to the input range)
"0.1 %
Status, Interrupts, Diagnostics
Interrupts
SHardware interrupt
SDiagnostic interrupt Parameters can be
assigned
Parameters can be
assigned
Diagnostic functions
SGroup error display
SDiagnostics information
read-out
Red LED (SF)
Possible
Data for Selecting a Sensor
Input range (rated
values)/Input resistance
SVoltage "1 V
"5 V
"10 V
1 to 5 V;
/10 MΩ
/100 kΩ
/100 kΩ
/100 kΩ
SCurrent "20 mA
0 to 20 mA;
4 to 20 mA:
/50 Ω
/50 Ω
/50 Ω
Maximum input voltage for
voltage input (destruction
limit)
max. 20 V continuous;
75 VDC for no more than
1 s (pulse duty factor
1 : 20)
Maximum input current for
current input (destruction
limit)
40 mA
Connection of the sensor
SFor measuring voltage Possible
SFor measuring current
As two-wire transmitter Possible
As four-wire transmitter Possible
SLoad of the 2-wire
transmitter
(at L+ = DC 24 V)
max. 820 Ω
Characteristic linearization None
2.1 Clock synchronization
Characteristics
Reproducible response times (i.e. times of the same length) are achieved in
SIMATIC by means of an equidistant DP bus cycle and the synchronization of the
following free-running individual cycles:
SFree-running cycle of the user program. On account of cyclic program branches
the length of the cycle time may vary.
SFree-running, variable DP cycle on the PROFIBUS subnet.
SFree-running cycle on the DP slave backplane bus.
SFree-running cycle at signal conditioning and conversion in the electronic
modules of the DP slaves.
With equidistance the DP cycle runs with the same clock pulse and for the same
length. The priority classes of a CPU (OB 61 to OB 64) and the clocked I/Os are
synchronized with this clock pulse. The I/O data are thus transferred at defined,
fixed intervals (clock synchronization).

18 ProductInformation on the Manual S7-300 Module Specifications, Edition 11/2002
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Prerequisites
SThe DP master and DP slave must support clock synchronization. STEP 7 as of
Version 5.2 is required.
Mode: clock synchronization
The following conditions apply to clocked mode:
Filter and processing time TWE between the actual values being read in
and made available in the transfer buffer
(the specified value for T WE applies regardless of the activation of the
hardware interrupt or diagnosis)
516 to 606 ms
Includes an input delay of 80 ms
TDPmin 3.5 ms
Diagnostic interrupt max. 4 x TDP
Note
In clocked mode, the integration time for the module is always set to “none”or
“interference frequency”, regardless of the parameter assignment in STEP 7.
Hardware interrupt functionality is not possible in clocked mode.
Calculation of the filter and processing time
The same time conditions apply regardless of the number of channels
parameterized. The point of time in relation to the clock signal at which a specific
channel is read in is calculated on the basis of the following formula:
TWE_CH = (channel number +1) x 52 ms + tv; tv = 100 to 190 ms
CH7 CH6 CH5 CH4 CH3 CH2 CH1 CH0
52ms52ms52ms52ms52ms52ms52ms52ms 100ms ... 190ms
A/D conversion Internal processing (tv)
TWE
Ti
Figure 6 Figure 7 Calculation of the filter and processing time

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Explanation of functioning in clocked mode
At Ti starts AD conversion for channel 7 and saves its result internally. Channels 6
to 0 are then converted sequentially in the same way at intervals of 52 ms. After an
additional internal processing time, the results of all the converted channels are
made available on the backplane bus to be picked up by the CPU.
Further information
You will find further information on clock synchronization in the online help system
of STEP 7, in the manual ET 200M Distributed I/O System and in the manual
Clock Synchronization.

20 ProductInformation on the Manual S7-300 Module Specifications, Edition 11/2002
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2.2 Commissioning the SM 331; AI 8 14 Bit High Speed
You specify how the SM 331; AI 8 14 Bit High Speed is to work by means of
measurement range modules on the module and STEP 7.
Measuring range modules
If necessary, the measuring range modules must be replugged to change the
measuring method and the measuring range. You then have to switch the 24 V
supply off and on again at the front connector. Section 4.4 of the reference manual
provides a detailed description of how to do this.
Section 4.20.3 of the reference manual contains a table indicating the settings to
be selected for different measurement methods and ranges. The required settings
are also printed on the module.
Default settings for measuring range module
The measuring range modules are preset to “B”(voltage; "10 V) when the
module is supplied.
To use the following preset measuring methods and measuring ranges, you only
have to change the measuring range module to the corresponding setting.
Parameter assignment in STEP 7 is not necessary.
Table 7 Defaults of the SM 331; AI 8 14 Bit High Speed via measuring range
modules
Measuring Range
Module Setting Measuring Method Measuring Range
A Voltage "1 V*
B Voltage "10 V
C Current,
Four-wire transmitter 4 to 20 mA
D Current,
Two-wire transmitter 4 to 20 mA
*You must short-circuit unused channels and connect them to MANA.