Emerson PACSystems RSTi-EP User manual

QUICK START GUIDE
GFK-3039C
Apr 2021
PACSystemsTM RSTi-EP
STANDALONE 1GHz PROGRAMMABLE CONTROLLER
(EPSCPE115)

i PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
Contents
User Features................................................................................................... ii
Membrane Run/Stop Pushbutton ...................................................................................... 3
LED Indicators (LEDs) ......................................................................................................... 3
Ethernet Ports.................................................................................................................... 5
USB Port............................................................................................................................. 9
Serial Ports......................................................................................................................... 9
Hardware Installation .................................................................................... 10
Initial Checks.................................................................................................................... 10
Installation & Mounting ................................................................................................... 11
Grounding ....................................................................................................................... 14
Module Start-up ............................................................................................ 15
Power-Up Time................................................................................................................ 15
Programming the CPE115 .............................................................................. 17
Backwards Compatibility ................................................................................................. 17
PROFINET Controller Configuration................................................................................. 17
OPC UA Server Configuration........................................................................................... 18
Serial Port Configuration.................................................................................................. 18
Performance with Typical Configuration ........................................................ 20
Replacement of Internal Supercapacitor......................................................... 22
Troubleshooting FAQs ................................................................................... 25
Additional Information .................................................................................. 29

ii PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
Caution & Warning Notes as Used in this Publication
WARNING
Warning notices are used in this publication to emphasize that hazardous voltages,
currents, temperatures, or other conditions that could cause personal injury exist in this
equipment or may be associated with its use.
In situations where inattention could cause either personal injury or damage to
equipment, a Warning notice is used.
CAUTION
Caution notices are used where equipment might be damaged if care is not taken.
These instructions do not purport to cover all details or variations in equipment, nor to provide
for every possible contingency to be met during installation, operation, and maintenance. The
information is supplied for informational purposes only, and Emerson makes no warranty as to
the accuracy of the information included herein. Changes, modifications, and/or improvements
to equipment and specifications are made periodically and these changes may or may not be
reflected herein. It is understood that Emerson may make changes, modifications, or
improvements to the equipment referenced herein or to the document itself at any time. This
document is intended for trained personnel familiar with the Emerson products referenced
herein.
Emerson may have patents or pending patent applications covering subject matter in this
document. The furnishing of this document does not provide any license whatsoever to any of
these patents.
Emerson provides the following document and the information included therein as-is and
without warranty of any kind, expressed or implied, including but not limited to any implied
statutory warranty of merchantability or fitness for particular purpose.

1 PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
User Features
The PACSystems RSTi-EP EPSCPE115 (or CPE115), is an enhanced performance
standalone 1GHz programmable controller equipped with 1.5 MB of user
memory and four Ethernet ports. It is designed to run real-time, deterministic
control applications and supports distributed I/O.
LAN1 is a dedicated high-speed Ethernet port. LAN2 is comprised of 3 switched
ports configurable as either an embedded Ethernet controller or an embedded
PROFINET controller supporting PROFINET simplex mode. All four ports are
located on the front panel, as shown in Figure 1.
The CPE115 is programmed and configured over Ethernet via PAC Machine
Edition (PME) software. It can control/process up to 2K I/O points.
Features include:
•A built-in PACSystems RSTi-EP PLC CPU
oUser may program in Ladder Diagram, Structured Text, or Function
Block Diagram.
oContains 1.5Mbytes of configurable data and program memory.
oSupports auto-located Symbolic Variables that can use any amount of
user memory.
oReference table sizes include 2k bits for discrete %I and %Q and up to 32k
words each for analog %AI and %AQ. Bulk memory (%W) also supported
for data exchanges.
oSupports up to 512 program blocks. Maximum block size is 128KB.
•The embedded communications interface has dedicated processing
capability, which permits the CPU to independently support LAN1 and LAN2
with:
oUp to 16 combined SRTP Server and Modbus TCP Server connections out
of which Modbus TCP cannot exceed more than 8 connections (or) up to

2 PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
16 simultaneous SRTP Server connections (or) up to 8 simultaneous
Modbus TCP Server connections.
o8 Clients total are permitted and may be a combination of SRTP or
Modbus/TCP.
oUp to 8 simultaneous Class 1 Ethernet Global Data (EGD) exchanges.
oWhen used in combination for optimal performance, use must not exceed
4 Channels for Server (Modbus/SRTP) and 4 Channels for client
(Modbus/SRTP), 8 PROFINET nodes and 8 EGD data exchanges.
•Ability to display serial number and date code in PME Device Information Details.
•Media Redundancy Protocol (MRP) allows the CPE115 to participate in a
PROFINET I/O network with MRP ring technology. This eliminates the I/O
network as a single point of failure. The CPE115 may be used as either a Media
Redundancy Manager or Media Redundancy Client.
•OPC UA Server supports up to 2 concurrent sessions with up to 4 concurrent
variable subscriptions and up to 1000 variables.
•Modbus RTU Slave and Serial, I/O support on two serial ports i.e. RS-232 and RS-
485 with both 2-wire and 4 -wire interface. These ports are located on the
underside of the controller and do not provide any type of isolation.
•Operating temperature range -40 °C to 70 °C (-40 °F to 158 °F).
•Supports 32-bit C blocks compiled with the C Toolkit Version 8.10 or later. All
pre-existing C blocks must be recompiled before downloading.
•Supports Authorized Firmware Update feature. Users may now authorize access
to firmware updates using a custom password. Details are included in the
revised firmware update instructions.

3 PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
Membrane Run/Stop Pushbutton
The Membrane Run/Stop push button is located at the
bottom right of the front panel (see Figure 1). Pressing
it briefly, will change the state of CPU from the current
state to the next state. It acts as a toggle switch, as
shown in the following state diagram:
Note: The Run/Stop
switch is enabled by
default; it can be
disabled in PME
Hardware
Configuration (HWC)
settings.
LED Indicators (LEDs)
Ethernet Status Indicators
For each port of LAN1 and LAN2, there are two LEDs (Yellow/Green) embedded in the
RJ-45 connectors. The green LED indicates an Ethernet connection has been
established on that port. The yellow LED indicates packet traffic on that port.
Figure 1: Run/Stop
Pushbutton

4 PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
Module Status Indicators
As shown in Figure 2, there are three LEDs
located at the bottom right of the front panel,
just below the Membrane Push Button.
The following tables describe the behavior of
each module LED:
LED
LED State
Operating State (at Power-Up)
RUN
Blinking; All
other LEDs off
This LED indicates the status of PLC during powering
up. It starts blinking 6 seconds after applying power to
the PLC and remains in this state for up to 15 seconds.
After this all LEDs turn off and will remain in this state
until PLC is ready.
LED
LED State
Operating State (after Power-Up)
OK
On Green
PLC has passed its power-up diagnostics and is
functioning properly.
Off
Power is not applied, or PLC has a problem.
Blinking; All
other LEDs
off
PLC in STOP/Halt state; possible watchdog timer fault. If
the programmer cannot connect, cycle power and refer
to the fault tables. Refer to Section 0. Troubleshooting
FAQs for more details.
RUN
On Green
PLC is in RUN mode.
Off
PLC is in STOP mode.
Figure 2: LED Indicators

5 PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
LED
LED State
Operating State (after Power-Up)
Blinking; All
other LEDs
off
Indicates that PLC has encountered a fatal error and is
blinking the error code.
Fault
On Red
PLC is in STOP/Faulted mode: a fatal fault has occurred.
Refer to Troubleshooting FAQs for more details.
Off
No fatal faults detected.
Ethernet Ports
CPE115 provides two independent Fast Ethernet LANs.
•LAN1 has only one port and is dedicated to the embedded Ethernet controller.
•LAN2 is comprised of 3 switched ports, each configurable either as a second
embedded Ethernet controller or as an embedded PROFINET controller.
Use PME to configure the operation of the ports.
All the Ethernet ports of both the LAN1 and LAN2 are capable of automatically sensing
the link data rate (10 Mbps or 100 Mbps), communications mode (half-duplex or full-
duplex), and cabling arrangement (straight-through or crossover).
To establish Ethernet communications between the PME programming software and
the CPE115, you first need to set a valid IP address.
CPE115
LAN1
LAN2
Default IP Address:
192.168.0.100
0.0.0.0
Subnet Mask:
255.255.255.0
0.0.0.0
Gateway:
0.0.0.0
0.0.0.0

6 PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
Note:
•LAN2 will not be operational unless it is configured from the
programmer with a valid IP address.
•Care must be taken when assigning IP Addresses and subnet masks to
each LAN so that an overlapping IP subnet is not created. Intermittent or
no Ethernet communication may result if an overlapping IP subnet is
created and the two interfaces are NOT connected (cabled) to the same
physical network.
•By default, PME prohibits configuring both LAN interfaces on an
overlapping IP subnet. (This may be changed by going to Controller
General Options and changing the Multiple Embedded LANs on Same
Subnet to Show as Warning.)
Typical Network Application
A typical application will take advantage of the two independent LANs. The dedicated
LAN 1 port will be used for communications with plant-level or supervisory layers. The
switched LAN 2 will be used to communicate with devices over PROFINET within the
manufacturing cell or process.

7 PACSystems™ RSTi-EP EPSCPE115 Standalone CPU Quick Start Guide GFK-3039C
Figure 3: Typical Multi-Tier LAN Application (Star/Bus topology)
Typical Multilevel Network Application
Whenever CPE115 is configured for MRP only, Ethernet Port2 & Port3 of LAN2 may be
used to form a ring. Ethernet Port4 of LAN2 may still be used either to connect to the
programmer, to a simplex PROFINET device or to any other supported Ethernet
protocols.