Ransburg Serial Node Adapter LECU4002_78553 - Manual (Page 10)

INTRODUCTION
GENERAL DESCRIPTION
This service manual covers both the Serial Node
Adapter and Serial Node Adapter Plus. The
Plus version does everything the original Node
Adapter does and has added capabilities such as
certain I/O signals may be handled either via A-B
Remote I/O or discretely. In general, this manual
will address the two as one module and point out
the additional capabilities of the Node Adapter
Plus where applicable.
The Serial Node Adapter / Serial Node Adapter
+ Modules have three parts: 1) Allen Bradley
remote I/O (RIO) interface, 2) central processor,
and 3) serial input/output circuits.
The RIO interface contains some Allen-Bradley
(A-B) components which are licensed to Ransburg.
These are designed specifically to communicate
with the proprietary protocol of the RIO serial
link. The central component of this block is an
application specific IC (ASIC) which is capable
of formatting the RIO information for use by the
central processor. The termination of the RIO
cable is made to the motherboard at the rear of
the Serial Node Adapter + Module location.
The core of the central processor is an 8032
microprocessor which communicates with the
Allen-Bradley ASIC. The 8032 provides an RS-
232 port from which diagnostic functions are
accomplished via internal “debugger” software.
The main software program, which includes the
“debugger” functions, is contained in an Erasable
Programmable Read-Only Memory (EPROM).
The serial I/O circuits are the interface to the other
Eurocard modules in the control rack or racks.
The Serial Node Adapter + uses two-wire serial
(CANBus) bus communication for this, and all
associated modules are equipped to receive and
send information on this bus.
Environmental / Physical
SPECIFICATIONS
Electrical
Power Required: 24 Vdc at 150 mA Max.
Operating Temperature: 0° to 55°C
Storage Temperature: -40°C to 75°C
Humidity:
95% Non-Condensing
Size: 100 x 160mm
Eurocard module,
25mm wide
Serial Node Adapter/Serial Node Adapter + - Introduction
Ransburg
6 LN-9238-02.3