Beckhoff CX1500-M510 Manual page 145

a: Word alignment (of analog and special terminals)
0: No alignment (default)
1: Map data to word boundaries (process data always starts on an even address in the PDO)
d: Data format for complex terminals (analog and special terminals)
0: Intel format (default)
1: Motorola format
k: Evaluation of complex terminals (analog and special terminals)
0: User data only (default)
1: Complete evaluation (note: analog channels then, for example, need 3 input and 3 output bytes instead of,
e.g., 2 input bytes; instead of 4 channels per PDO, 2 channels require a RxPDO and a TxPDO)
Bus Terminal / Extension Box register communication
Bus Terminal / Extension Box register communication
Index Sub-index Name
0x4501 0
1
...
0XFE
The 32 bit value is composed as follows:
MSB
Access (bit 7) + channel
number (bits 6...0)
[0..1] + [0...0x7F]
CX1500-M510, CX1500-B510
Type
Access Unsigned8 ro
Terminal
Register
Access Unsigned32 rw
Reg.
Terminal 1
... ...
Access Unsigned32 rw
Reg.
Terminal
254
Register number
[0...0xFF]
Version: 1.0
Attribute Mapping
N
N
... ...
N
High byte register value
[0...0xFF]
Product overview
Default Meaning
value
none Index
0x4501
allows
access to
all the
registers in
the bus
terminal or
extension
module.
Sub-index 0
contains
the number
of attached
bus
terminals.
none Access to
bus
terminal or
extension
module
register 1
... ...
none Access to
bus
terminal or
extension
module
register 254
LSB
Low byte register value
[0...0xFF]
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