3 cyclic message telegrams – INFICON BCG450-SP ATM to Ultra-High Vacuum Triple Gauge (Profibus) User Manual

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tira41e1 (2005-06) BCG450SPv1.cp

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The message telegrams listed below are implemented in the gauge. They can be
selected according to requirements. When selecting a message telegram, ascertain
what output format of the measured value (integer/float) is required and whether a
parameter channel is needed or not. The gauge can also be operated in such a
way that the master does not transmit any output data to the slave.

Standard

telegram

Master

Slave

Byte

Meaning

1

M

⇒ S

1

Transition Command

2

Transition Command Value for Hot Ion Gauges

2

M

⇒ S

1 … 8

Parameter Channel

9

Transition Command

10

Transition Command Value for Hot Ion Gauges

3

M

⇒ S

1 - 8

Parameter Channel

4

S

⇒ M

1

Exception status

2

One Of N status extension

3

One Of N PV selector

4 … 5

Process value UINT16

5

S

⇒ M

1

Exception status

2

One Of N status extension

3

One Of N PV selector

4 … 7

Process value float

6

S

⇒ M

1 … 8

Parameter channel

9

Exception status

10

One Of N status extension

11

One Of N PV selector

12 … 13 Process value UINT16

7

S

⇒ M

1 … 8

Parameter channel

9

Exception status

10

One Of N status extension

11

One Of N PV selector

12 … 15 Process value float

In the following table, the possible reasonable combinations are listed with the
corresponding configuration data.

Standard telegram

Master

⇒ Slave

Standard

telegram

Slave

⇒ Master

Configuration data

-

4

0x44, 0x84, 0x05, 0x05, 0x05, 0x03

-

5

0x44, 0x86, 0x05, 0x05, 0x05, 0x08

1

4

0xC6, 0x81, 0x84, 0x05, 0x05, 0x05,
0x05, 0x05, 0x03

1

5

0xC6, 0x81, 0x86, 0x05, 0x05, 0x05,
0x05, 0x05, 0x08

3

6

0xC6, 0x87, 0x8c, 0x0A, 0x0A, 0x05,
0x05, 0x05, 0x03

3

7

0xC6, 0x87, 0x8E, 0x0A, 0x0A,
0x05, 0x05, 0x05, 0x08

2

6

0xC8, 0x89, 0x8c, 0x0A, 0x05, 0x05,
0x0A, 0x05, 0x05, 0x05, 0x03

2

7

0xC8, 0x89, 0x8E, 0x0A, 0x05, 0x05,
0x0A, 0x05, 0x05, 0x05, 0x08

2.3 Cyclic Message

Telegrams

Configuration data

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