Device DDT Instance Naming Rule

Modules Concerned by Default Naming Rule

The following table presents the main categories of modules concerned by the device DDT instance naming rule:

Architecture		Modicon M580	Modicon Quantum
Position	Family	Modicon M580	Modicon Quantum
Local Drop	X80	Analog I/O: most modules	–
		Discrete I/O: most modules
		Counting: most modules
		Communication: BMXEIA0100 BMXNOM0200 BMECXM0100 and slaves attached
	Modicon Quantum	–	Communication: 140CRP31200
Ethernet I/O Drop	X80	BM•CRA312•• adapter module	BM•CRA312•• adapter module
		Analog I/O: most modules	Analog I/O: most modules
		Discrete I/O: most modules	Discrete I/O: most modules
		Counting: most modules	Counting: most modules
		Communication: BMXEIA0100 BMXNOM0200 BMECXM0100 and slaves attached	Communication: BMXEIA0100 BMXNOM0200 BMECXM0100 and slaves attached
	Modicon Quantum	The drop	The drop
		Analog I/O: most modules	–
		Discrete I/O: most modules
		Counting: No
		Communication: No

The syntax is based on topological naming and is built as follows:

BBBx_dx_rx_sx_PPPPPPP_SSS

BBBx: Bus name and bus number.
- BBB = Bus name represented by the 3 first characters of the bus name displayed in the Control Expert project browser.
- x = Bus number
dx: Drop number.
- d = d
- x = Drop number. Number equals 0 for a virtual drop.
rx: Rack number.
- r = r
- x = Rack number. Number equals 0 for a virtual rack, optional for CANopen devices.
sx: Slot number.
- s = s
- x = Slot number. Optional for CANopen devices.
PPPPPPP: Device part number. Part number without space as it is displayed on the device representation in Control Expert.
SSS: Name of a subset it the device DDT is linked to a subset. These characters are optional.

NOTE: If a name is not unique, _rrrrr is added at the end of the string (rrrrr being a random character series).

Device DDT instance name examples in a Modicon M580 application (M580 CPU):

Modicon M580 local drop 0, rack 0, slot 2 located on PLC bus number 0. BMXDAI0805 module.

PLC0_d0_r0_s2_DAI0805
X80 Ethernet I/O drop 1, rack 0, slot 0 located on EIO bus number 2. BMXCRA31200 module.

EIO2_d1_r0_s0_CRA31200
Modicon Quantum Ethernet I/O drop 2, rack 1 located on EIO bus number 2. Modicon Quantum drop with a 140CRA31200 adapter module.

EIO2_d2_DROP

NOTE: In this case, the rack and slot numbers are omitted.

Device DDT instance name examples in a Modicon Quantum application (Quantum CPU):

Modicon Quantum local drop 1, rack 1, slot 4 located on Local Bus number 2. 140CRP31200 adapter module to address Ethernet I/O drops.

LOC1_d1_r1_s4_CRP31200
X80 Ethernet I/O drop 1, rack 0, slot 0 located on EIO bus number 2. BMECRA31210 module.

EIO2_d1_ECRA31210

NOTE: In this case, the rack and slot numbers are omitted as for a Quantum Ethernet I/O drop adapter.
X80 Ethernet I/O drop 1, rack 0, slot 1 located on EIO bus number 2. BMXDAI0805 module.

EIO2_d1_r0_s1_DAI0805
Modicon Quantum Ethernet I/O drop 2, rack 1 located on EIO bus number 2. Modicon Quantum drop with a 140CRA31200 adapter module.

EIO2_d2_DROP

NOTE: In this case, the rack and slot numbers are omitted.

Actions on Device DDT instances and modules with an associated device DDT are detailed in the following section: Managing a Device DDT instance.