Kendrion Kuhnke Automation GmbH
AO4-U/I
80
11/25/2016
4.16.4.5 Module state
The following module states are indicated:
Variable
Data type Explanation
Shortcut
BOOL
Short circuit (not used)
Undervoltage
BOOL
Low voltage (supplied power < 19.2V)
Watchdog
BOOL
module internal watchdog
EtherCAT_Error
BOOL
Configuration error or watchdog control
Specific_Error
BOOL
Module-specific fault
OptionsSet
BOOL
Sent by module to acknowledge SetOptions
To reset the messages, see section 4.16.4.3
4.16.4.6 Module-specific messages
Apart from the module error messages, there is a set of messages containing details about the current state
of the module:
Variable
Data type Explanation
Channel_n_Overtemp
BOOL
Temperature of output driver of channel n is > 140°C
(automatic switch-off), i.e. shortcut
See Module options, Outputs_Active_Shortcut
Undervoltage_24
BOOL
Power supply to module is < 19.2V
See Module options, Outputs_Active_Undervoltage
Channel_n_Open
BOOL
Current mode: channel n load is > 500
Ω
Specific_Error = TRUE
Channel_n_Shortcut
BOOL
Voltage mode: channel n load is < 600
Ω
Specific_Error = TRUE
These messages are automatically reset when the state concerned has returned to normal.
Channel_n_Open and Channel_n_Shortcut are combined into a single "Specific_Error" state of the module
and output to the IO LED as "module-specific error".
4.16.4.7 Conversion time
Module AO4 has a set cycle time of 320µs that is not affected by the number of active channels. (The cycle
time is the time between receipt of the output values and the start of the D/A converters.)