Technical Data
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PC Cards cifX PC/104 | Installation, Operation and Hardware Description
DOC120206UM42EN | Revision 42 | English | 2014-12 | Released | Public
© Hilscher, 2008-2014
10.2.5 Open Modbus/TCP
Parameter
Description
Maximum number of input data
2880 Registers
Maximum number of output data
2880 Registers
Acyclic communication
Read/Write Register:
- Maximum 125 Registers per Read Telegram (FC 3, 4, 23),
- Maximum 121 Registers per Write Telegram (FC 23),
- Maximum 123 Registers per Write Telegram (FC 16)
Read/Write Coil:
- Maximum 2000 Coils per Read Telegram (FC 1, 2),
- Maximum 1968 Coils per Write Telegram (FC 15)
Modbus Function Codes
1,
2,
3,
4,
5,
6,
7,
15,
16,
23*
* Function Code 23 can be used via the packet API, but not with
the Command Table.
Protocol Mode
Message Mode (Client Mode):
- Client (using the Command Table: The data is stored in the I/O
process data image)
- Client (using the packet API: The I/O process data image is not
used)
- Server (using the packet API: The I/O process data image is not
used)
I/O Mode (Server Mode):
- Server (only) (The data is stored in the I/O process data image)
Baud rates
10 and 100 MBit/s
Data transport layer
Ethernet II, IEEE 802.3
Reference to firmware/stack version
V2.5.x.x
Table 103: Technical Data Open Modbus/TCP Protocol
10.2.6 POWERLINK Controlled Node/Slave
Parameter
Description
Maximum number of cyclic input data
1490 bytes
Maximum number of cyclic output data
1490 bytes
Acyclic data transfer
SDO Upload/Download
Functions
SDO over ASND and UDP
Baud rate
100 MBit/s, half-duplex
Data transport layer
Ethernet II, IEEE 802.3
Ethernet POWERLINK version
V 2
Limitation
No slave to slave communication
Reference to firmware/stack version
V2.1.x.x
Table 104: Technical Data POWERLINK Controlled Node (Slave) Protocol
