USER MANUAL APS 6.0

Preface
Advanced Programming Software User Manual
12–10
The counters listed under network diagnostics have the following ranges:
Network Diagnostics Valid Ranges
Total Nodes 031
Max. Node Address 031
Messages Transmitted 065535
Messages Received 065535
Retries 0255
Retry Limit Exceeded 0255
Bad Messages Received 0255
Nak No Memory Sent 0255
Nak No Memory Rcvd 0255
Node diagnostics are for the cursored node shown in the Who Active display.
Note The
firmwar e r evision and firmwar e series fields r efer to the pr ocessor’ s series and
r evision fields in the status file for the SLC 5/03 and SLC 5/04 pr ocessors. The
operating system (OS) series and revision fields ar e found only in the status file
(S:58 and S:59 respectively).
Establishing Processor Node Addresses on a Multi-Node Network
The default node address for a processor file is 1. This means that unless addresses
have been changed previously , all processor nodes on the network initially have
address 1. This makes it impossible to communicate with an individual processor .
You must bring up the network one node at a time.
Refer to the typical DH-485 network on page 12–11. An APS terminal at node 0
(the default node) is connected to link coupler A. There are 3 processors on the
network plus a gateway module to bridge to a DH+ network. The gateway module
has been assigned to node 4 by means of DIP switch settings on the device.
Assuming that the default node address value of 1 has not been changed for any of
the processors, set processor addresses as follows:
1. Apply power only to the processor connected to link coupler D. Restore
(download) the appropriate processor file to the processor.
2.
Assign node address 3 to the processor using the Who Active function or set the
node address in the system status file before saving the program you wish to
download. Address 3 takes ef fect when you cycle power to the processor.