Siemens SIMATIC TI505 Uživatelský manuál stáhnout pdf (Strana 40)

Modbus Commands

2-9

SIMATIC TI505/TI500 MODNIM User Manual

Response: 07 01 01 1A XXXX

Checksum (XXXX)

Data (1A)

Number of bytes (01)

Function code (01)

Slave address (07)

Figure 2-5 Read

Coil Status Example — Response

The response returns in the data field a single byte (1A) which contains the

1’

s or 0’

s for the 5 coils, packed out with zeros for the three high bits.

1A =

0 0 0 1 1 0 1 0

Coil 0A (OFF)

Coil 0B (ON)

Coil 0C (OFF)

Coil 0D (ON)

Coil 0E (ON)

Packed with zeros (000)

Figure 2-6 Read

Coil Status Example — Data Field

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 90 91

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Siemens SIMATIC TI505 Uživatelský manuál Strana 40