Festo CPX-FB14 Description page 75

2. Commissioning
Transmit PDO 1
Receive PDO 1
Transmit PDO 2
Receive PDO 2
Transmit PDO 3
Receive PDO 3
Transmit PDO 4
Receive PDO 4
Fig. 2/1: Overview of PDO 1 ... 4 and position of the status bits and I/O diagnostic inter­
face
Festo P.BE-FB14-EN en 1411d English
The following figure shows the standard distribution of I/Os
on the PDOs in the remote I/O operating mode. If you use
more than 8 I/O bytes, you must map these into the PDOs by
"mapping". In this case, the use of analogue channels will be
limited. The same applies in the reverse case if more than 8
analogue channels are mapped into the PDOs by mapping.
I0...I7 I8...I15 I16...I23
O0...O7 O8...O15 O16...O23 O24...O31 O32...O39 O40...O47 O48...O55 O56...O63
AI0 AI1
AO0 AO1
AI4 AI5
AO4 AO5
1)
IW0 / diagnostics IW1
2)
OW0 / I/O diag. OW1
1)
Dependent on the configuration:
With status bits: I0 - I7, with I/O diagnostic interface: I0 ... I15
The input words of the technology modules shift correspondingly.
2)
Dependent on the configuration:
With activated I/O diagnostic interface: O0 ... O15 (è section 1.2.2)
The output words of the technology modules shift correspondingly.
Note
For the receive PDO 1 ... 4:
– The necessary telegram length depends on the CPX
expansion and is 1 ... 8 byte.
– If the telegram received is shorter than the necessary
telegram length, an error message will be output.
– If the telegram received is longer, the part
corresponding to the necessary length will be
processed.
I24...I31 I32...I39 I40...I47
AI2
AO2
AI6
AO6
IW2
OW2
I48...I55 I56...I63
AI3
AO3
AI7
AO7
IW3
OW3
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