di is for discrete input (#2842)

Author: MrWaloo

examples/server_datamodel.py

@@ -16,9 +16,9 @@
 def define_datamodel():
     """Define register groups.
 
-    Coils and direct inputs are modeled as bits representing a relay in the device.
-    There are no real difference between coils and direct inputs, but historically
-    they have been divided. Please be aware the coils and direct inputs are addressed differently
+    Coils and discrete inputs are modeled as bits representing a relay in the device.
+    There are no real difference between coils and discrete inputs, but historically
+    they have been divided. Please be aware the coils and discrete inputs are addressed differently
     in shared vs non-shared models.
     - In a non-shared model the address is the bit directly.
       It can be thought of as if 1 register == 1 bit.
@@ -38,9 +38,9 @@ def define_datamodel():
             address=5, values=17, count=10, datatype=DataType.REGISTERS
         )
 
-    # Define a group of coils/direct inputs non-shared (address=15..31 each 1 bit)
+    # Define a group of coils/discrete inputs non-shared (address=15..31 each 1 bit)
     #block1 = SimData(address=15, count=16, values=True, datatype=DataType.BITS)
-    # Define a group of coils/direct inputs shared (address=15..31 each 16 bit)
+    # Define a group of coils/discrete inputs shared (address=15..31 each 16 bit)
     #block2 = SimData(address=15, count=16, values=0xFFFF, datatype=DataType.BITS)
 
     # Define a group of holding/input registers (remark NO difference between shared and non-shared)
@@ -62,7 +62,7 @@ def define_datamodel():
     SimDevice(id=1, type_check=False, registers=[block_def, block5])
     #SimDevice(2, False,
     #          block_coil=[block1],
-    #          block_direct=[block1],
+    #          block_discrete=[block1],
     #          block_holding=[block2],
     #          block_input=[block3, block4])
     # Remark: it is legal to reuse SimData, the object is only used for configuration,

pymodbus/simulator/simdevice.py

@@ -22,7 +22,7 @@ class SimDevice:
     support these devices, define 1 large block consisting of the
     4 blocks and use the offset_*= parameters.
 
-    When using distinct blocks, coils and direct inputs are addressed differently,
+    When using distinct blocks, coils and discrete inputs are addressed differently,
     each register represent 1 coil/relay.
 
     **Device with shared registers**::
@@ -39,7 +39,7 @@ class SimDevice:
             registers=[SimData(...)],
             non_shared_mode=True,
             offset_coil=0,
-            offset_direct=10,
+            offset_discrete=10,
             offset_holding=20,
             offset_input=30,
         )
@@ -71,7 +71,7 @@ class SimDevice:
 
     #: Define starting address for each of the 4 blocks.
     #:
-    #: .. tip:: Content (coil, direct, holding, input) in growing order.
+    #: .. tip:: Content (coil, discrete, holding, input) in growing order.
     offset_address: tuple[int, int, int, int] | None = None
 
     #: Enforce type checking, if True access are controlled to be conform with datatypes.