Specifications

sigmadue - IEC 61131-3 Function Block Library
60
Each Function Block
1
has always the control signals:
Input description
Output description
After specifying the node address through NODEID input, the block is enabled by
forcing to 1 the bit in the position
NODEID of the NETWORK input. Calling the Function
Block with the corresponding bit to 1, a first configuration phase is initially completed
and the real time module-CPU data exchange procedures are subsequently enabled. If
the Function Block is called with enabling bit to 0, the internal status is reset: new calls
with bit to 1 result in a new module configuration. CONFIRM output is set to TRUE
when module initialisation/configuration is terminated and the communication
messages including the input values and/or the output status are exchanged properly.
For convenience and to reduce the number of used data types, the DWORD and REAL
format are standardized for respectively digital and analogue modules.
2-2-1 Output module value setting in case of communication error
Each CAN output node of Ascon SpA sigmadue series is capable of activating a
particular value for each module output. These settings are not included in standard
interface Function Block version and can be activated by using
bERROR-
STATEAN
and bERRORSTATEDIG FBs: while bERRORSTATEAN configures
the analogue module (
bAO08HL and bAO08DP ) behaviour, the second one con-
figures the behaviour for all those digital modules with outputs (
aDM08TS,
bDM08TS, bDM16TS, bDM32TS, bDO04RL, bDO08RL
, bDO04TX, bDO16TS,
bDO16TP
and bDO32TS ). For an effective control of communication-related error
status, Ascon SpA recommends to use these configuration modules with Node-
Guarding diagnostic system . For further details on different enabable diagnostic
types, see
CU-02 unit documentation.
With
NodeGuarding diagnostic protocol activated, the default settings of Ascon
SpA
sigmadue modules enable to force to zero the module outputs (digital and
analogue) during communications error detection
. This behaviour refers to Ascon
SpA sigmadue series module in
default or factory setting status (for further
details, see the User Manuals of each I/O module):
no guarantee is made for the
modules with changed configuration .
bAI02UI Interface FB with AI-02UI module
bAI04RT Interface FB with AI-04RT module
bAI08TC Interface FB with AI-08TC module
bAI08HL Interface FB with AI-08HL module
bAI08DP Interface FB with AI-08DP module
bAO08HL Interface FB with AO-08HL module
bAO08DP Interface FB with AO-08DP module
bERRORSTATEAN
FBs for error status management during communication
for analogue output modules
bERRORSTATEDIG
FBs for error status management during communication
for digital output modules
1. With the exception of bERRORSTATEAN and bERRORSTATEDIG modules.
Label Description
NETWORK It represents the physical bus connection
NODEID Network identifier
Label Description
CONFIRM Boolean flag indicating whether the module is working properly