Specifications

Section 1—Installation & Configuration Bulletin No. VVDED397044US R12/00
Optimizing Network Performance December 2000
36
© 1998–2000 Schneider Electric All Rights Reserved
use this function during normal network operation. This function is
also called NTO, No Time-Out.
4. Use distributed control where possible. The ALTIVAR 58 drive
controller has a large number of application functions that can be
used in conjunction with network communications. Where possible,
use these functions to allow local control by the drive controller while
using the network to communicate supervisory information. This
minimizes the information exchange burden on the network and
unburdens the controlling device.
5. Understand the failure possibilities of the designed network. Provide
control redundancies and contingencies appropriate for the intended
application.
6. Follow the wiring practices described in section 1. Improperly installed
network wiring can cause noisy or intermittent data transmission with
resulting loss of network speed and deterioration of security.
Table 8: Communication Parameters
Parameter Code Range Default Value Comments
Address Adrc 1–64 1
Address of MODBUS PLUS
node.
Read-only.
Configured with switches 1–6
on option card.
Protocol -Pro ——
Automatically set to MODBUS
PLUS if the card is present.
Read-only.
Time-Out
[1]
-tLP 0.1 to 60 s 1.0 Increments of 10 ms.
Peer Cop Node -PrC No/Yes No —
Global Tx
[2]
-GLb 0 to 32 0 0= No global data transmitted
Command Node
[3]
-Cdn 0 to 64 0
Must be different from the drive
controller network address.
0 = No reception of peer cop
registers.
Number of
Registers
[3]
-rEG 0 to 32 0
0 = No reception of peer cop
registers.
[1]
Time-out represents:
• The maximum time in which no token is received.
• The maximum time between receiving two peer cop transmissions.
• The maximum time before semaphore is lost by a station controlling the drive controller
via message handling.
When a time-out occurs the drive displays a CnF fault.
[2]
For more information, see “Global Data Transmission” on page 46.
[3]
For more information, see “Peer Cop” on page 43.