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7. Appendix A: Technical Characteristics
Specific DeviceNet
features of the LUFP9
gateway
• The LUFP9 gateway is a “group two only server” DeviceNet subscriber (cf.
DeviceNet Specifications).
• Fragmentation support for transactions requiring more than 8 bytes of data.
• Connections supported: 1 “Explicit Connection”
1 “Polled Command/Response” connection
1 “Bit Strobed Command/Response” connection
1 “Change-of-State / Cyclic” connection
• Communication speed configured using 2 selector switches.
• Gateway’s DeviceNet address (Mac ID) configured using 6 selector switches
(address between 0 and 63).
• Configuration facilitated by the use of a specific EDS file.
Modbus RTU
characteristics
• Physical media: RS485 serial link
• Network topology: Multipoint linear topology with adapted line terminations
(impedance of 120 Ω in parallel with a capacity of 1 nF)
• Communication speed: 1,200 to 57,600 kbits/s
• Data bits: 8
• Subscriber addresses: 1 to 247. Address 0 reserved for
broadcasting. Addresses 65, 126 and 127 reserved if drives and/or starters from
Schneider Electric are used on the same Modbus network.
• Period of silence: Equivalent to the transmission of 3.5 characters.
Specific Modbus RTU
features of the LUFP9
gateway
• Maximum number of subscribers (excluding gateway): 8 Modbus slaves.
• Maximum number of commands configured: Up to 50 Modbus queries and
responses configured for the same gateway using AbcConf.
• Communication speed: 1,200, 2,400, 4,800, 9,600, or 19,200 bits/s, configured
using AbcConf.
• Period of silence: Possibility of increasing the gateway’s period of silence, in
10 ms steps, using AbcConf.
• Parity: None, even or uneven, configured using AbcConf.
• Start bits: 1 bit, configuration using AbcConf.
• Stop bits: 1 or 2 bits, configuration using AbcConf.
Structure of the
LUFP9 gateway’s memory:
Inputs
• 2 bytes for the diagnostics of errors on the downstream network by the gateway
(see chapter 5 Gateway Initialization and Diagnostics, page 33).
• 510 bytes accessible by the DeviceNet master in the form of input data (see
chapter 8.2.1 Input Data Memory Area, page 84, for the default use of this
input data).
Addresses Input data area
16#0000
16#0001
Gateway status word
(unless “Control/Status Byte” = “Disabled”)
16#0002
:
Inputs accessible through the DeviceNet master
510 bytes
16#01FF 1 input data area