2878735 Datasheet 2878735 | P13-P15

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9.4 Permissible characteristics according to the jumper supply

The table below indicates which characteristic can be configured for which jumper supply.

10 Programming data/configuration data

Local bus (INTERBUS)) Other bus systems

11 Process data

The terminal occupies three process data words and one PCP word.

Figure 7 Order of the process data words

Characteristic U

= 3.3 V U

= 5 V

+1 mV/V Yes Yes

±1 mV/V Yes Yes

+2 mV/V Yes Yes

±2 mV/V Yes Yes

+3 mV/V Yes Yes

±3 mV/V Yes No

+4 mV/V Yes Yes

±4 mV/V Yes No

ID code DF

hex

(223

dec

)

Length code 03

hex

Process data channel 48 bits

Input address area 3 words

Output address area 3 words

Parameter channel (PCP) 1 word

For the programming/configuration data of

other bus systems, please refer to the

corresponding electronic device data sheet

(e.g., GSD, EDS).

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12 OUT process data output words

Three OUT process data words are available.

Configure the terminal channels via the OUT process data words.

Where:

– Output word OUT1 contains the command

– Output word OUT2 contains the parameters for channel 1

– Output word OUT3 contains the parameters for channel 2

The following configurations are possible:

Configuration errors are indicated in the status word. The configuration settings are stored in a volatile memory.

If you change the configuration, the message "Measured value invalid" appears (diagnostic code 8004

hex

), until new

measured values are available.

12.1 Output word OUT1 (control word)

Bit 15 to bit 8 (command code):

Configuration Short designation Default

Selection of mean value generation (filtering) Filter 16-sample mean value

Characteristic for calculating the gain (see "Startup/measuring jumper

detuning" on page 21)

Characteristic ±2 mV/V

OUT1

Bit 1514131211109876543210

Assignment

Command code 00000000

Bit 15 to bit 8 OUT1 Command function

0 0 0 0 0 0 0 0 0000

hex

Read measured values

0 0 0 1 0 0 0 C 1x00

hex

Read configuration channel-by-channel in IN2

(C = Channel number; 0 = Channel 1, 1 = Channel 2)

0 0 1 1 0 0 0 0 3000

hex

Read min. value; IN2: Min. value channel 1, IN3: Min. value channel 2

0 0 1 1 0 0 0 1 3100

hex

Read max. value; IN2: Max. value channel 1, IN3: Max. value channel 2

0 0 1 1 0 0 1 0 3200

hex

Delete minimum and maximum value of channel 1

0 0 1 1 0 0 1 1 3300

hex

Delete minimum and maximum value of channel 2

0 0 1 1 1 1 0 03C00

hex

Read firmware version and module ID in IN2.

0 1 0 0 0 0 0 0 4000

hex

Configure device;

configuration for channel 1 in OUT2 and for channel 2 in OUT3

During the transient response (e.g., following a configuration command), the fluctuating measured values may

exceed the minimum and maximum values. Therefore, at the start of acquisition delete the minimum and

maximum values using command 3200

hex

and/or 3300

hex

One measurement is performed for each bus cycle.

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12.2 Output word OUT2 and OUT3 (parameter word)

For command 4000

hex

the parameters must be specified in OUT2 and OUT3. This parameter word is only evaluated for

this command.

12.3 Parameters for configuration

The values in bold are default settings.

Bit 15:

Bit 8:

Bit 3 to bit 0:

OUT2 and OUT3

Bit 1514131211109876543210

Assignment 1000000Filter00000Characteristic

Bit 15 The set bit ensures that the relevant channel is configured.

In the event that only one channel is used and there is no jumper supply at the other channel due to missing

wire jumpers, the configuration is acknowledged negatively in the status word. In this case, set bit 15 of the

configuration word of the unused channel to 0 to remedy the situation.

Filter Selection of mean value generation. After every conversion, the measured value is saved in a mean value

memory via which the mean value is generated. The memory size can be selected with the filter option. E.g.,

for a 16-sample mean value, the mean value is generated using the last 16 measured values.

Character-

istic

Depending on the characteristic in relation to the available jumper supply, the terminal calculates the required

gain for the configured input and thus has the best possible resolution in the unipolar and bipolar area.

If in the unipolar area the strain gauge is supplied with a load greater than 130% or a negative load, the

jumper detuning is outside the measuring range and an error is triggered.

If in the bipolar area the strain gauge is supplied with a load greater than 130% in the positive or negative

direction, the jumper detuning is outside the measuring range and an error is triggered.

If invalid parameters are specified in the parameter word, the command will not be executed. The command is

acknowledged in the input words with the error bit set.

Code Configure

dec bin

0 0 Channel is not configured

1 1 Channel is configured

Code Filter

dec bin

00No mean value

1 1 16-sample mean value

Code Characteristic

dec bin

0 000 +1 mV/V

1 001 ±1 mV/V

2 010 +2 mV/V

3011±2 mV/V

4 100 +3 mV/V

5 101 ±3 mV/V

6 110 +4 mV/V

7 111 ±4 mV/V

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P22

2878735

Mfr. #:

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