What is the signification of the I/O words of a PCD2/3.W525 module?

FAQ #101552

When configuring a W525 module using the Device Configurator or the Profi-S-I/O (or Profibus DP) Network Configurator, the PCD2/3.W525 does need two registers for the analogue outputs and 8 registers for the analogue inputs.

The significations of the registers are the following:

Output registers:

Register	Bit 31..16	Bit 15..0
n		Value CH0 Output
n+1		Value CH1 Output

Description of the output registers:

Value CH0..1 (Register n, n+1)
This registers (Bit 0 to 15) does contain the analogue output value of the corresponding analogue output. It's a 12 Bit value.

Input registers:

Register	Bit 31..16	Bit 15..0
n		Value CH0 Input
n+1		Value CH1 Input
n+2		Value CH2 Input
n+3		Value CH3 Input
n+4		Load Current/Voltage
n+5		Status Module
n+6		Status Input
n+7		Status Output

Description of the input registers:

Value CH0..CH3 (Register n...n+3)
This registers (Bit 0 to 15) does contain the analogue input value of the corresponding analogue input. It's a 14 Bit value.

Load_Current / Load_Voltage (Register n+4)
On this register (Bit 0 to 15) the actual current or voltage value is displayed.

current in [μA] (0..20'000)
voltage in [mV] (0..10'000)

Status Module (Register n+5)
This register (Bit 0 to 15) does contain the actual status of the module

Table module status:

Bit	Description
15:14	Reserved
13	Error on the output channel CH1
12	Error on the output channel CH0
11	Error on the input channel CH3
10	Error on the input channel CH2
9	Error on the input channel CH1
8	Error on the input channel CH0
7:5	Reserved
4	Communication: Illegal Command. Is set to 1 if the module receive a not know instruction.
3	Communication: packet too long. Is set to 1 if during the communication a data byte (CMD/Data = 0) is received although a commando byte should be received (CMD/Data = 1)
2	UExt too low. The voltage of the external power supply is to low!
1	UExt Fail.
0	No Response.

Status Input (Register n+6)
This register (Bit 0 to 15) does contains the status of the input channels CH0..CH3.
The status of each input channel is displayed on 4 bits.

Status Input:

Bit	Description
Bit 0..3	CH0 Status
Bit 4..7	CH1 Status
Bit 8..11	CH2 Status
Bit 12..15	CH3 Status

Table input status:

Bit	Description
3	Over Temperature
2	Not Calibrated
1	Over Range
0	Under Range

Status Output (Register n+7)
This register (Bit 0 to 15) does contain the status of the two output channels CH0 and CH1.
The status of each output channel is displayed on 6 bits.

Status Output:

Bit	Description
Bit 0..5	CH0 Status (LOW BYTE)
Bit 8..13	CH1 Status (HIGH BYTE)

Table output status:

Bit			Description
CH0		CH1
5		13	Load Resistance too high. Only for outputs in current mode. Occurs typically if the output circuit is open
4	12		Load Resistance too low. Only for outputs in voltage mode. Occurs typically in case of short circuit
3	11		Over Temperature
2	10		Not Calibrated
1	9		Over Range
0	8		Under Range

What is the signification of the I/O words of a PCD2/3.W525 module?

FAQ #101552

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