Monaghan PME GPS 0100 User manual

User Guide
PME GPS 0100
Network Time Server
June 7, 2019
Version 2.11
Monaghan Engineering
862 Las Colinas Drive
Dripping Springs, TX 78620 USA
Telephone: [phone]
Facsimile: 1-512-858-1355
http://www.monaghan-engineering.com
Email: [e-mail]

monaghan + ENGINEERING PME GPS 0100 ii
Document Revisions
Date
Version
Number
Document Changes
10/24/2017
1.00
Preliminary Draft
8/1/2018
2.00
Initial Release
10/1/2018
2.09
Changes to System web page Event Report
10/17/2018
2.10
Added specifications section
6/7/2019
2.11
Corrected example of Module Identifier in Section 5.3
All trademarks and registered trademarks are the property of their respective owners.
Subject to change without notice.
© Monaghan Engineering, Inc. 2018 All Rights Reserved

monaghan + ENGINEERING PME GPS 0100 iii
Table of Contents
1Introduction ..................................................................................................................................................... 6
1.1 Operating Modes.......................................................................................................................................................6
1.2 Time Sources ..............................................................................................................................................................7
1.2.1 Crystal Oscillator...............................................................................................................................................7
1.2.2 GPS Receiver.......................................................................................................................................................7
1.2.3 PTP Master Clock..............................................................................................................................................7
1.3 Network Time Protocols........................................................................................................................................7
1.3.1 Precision Time Protocol.................................................................................................................................7
1.3.2 Network Time Protocol..................................................................................................................................8
1.4 Serial Time Protocols..............................................................................................................................................8
1.4.1 IRIG-B.....................................................................................................................................................................8
1.4.2 DCF-77...................................................................................................................................................................8
2DIO Overview................................................................................................................................................... 9
2.1 CPU DIO Limitations................................................................................................................................................9
2.1.1 DIO Connection Limits....................................................................................................................................9
2.1.2 DIO Byte Count Limits.....................................................................................................................................9
2.1.3 NOC DIO.............................................................................................................................................................10
2.1.4 Hot Standby Implications...........................................................................................................................10
2.1.5 Remote Rack Mounting Only.....................................................................................................................10
3Hardware Installation ................................................................................................................................11
3.1 GPS Receiver............................................................................................................................................................11
3.2 Time Code Outputs................................................................................................................................................12
3.2.1 5 VDC...................................................................................................................................................................12
3.2.2 24 VDC................................................................................................................................................................12
3.2.3 Interfacing to BMX ERT 1604 ...................................................................................................................12
3.3 Front Panel LED Indicators ...............................................................................................................................12
3.3.1 LED Display ......................................................................................................................................................12
3.3.2 GPS LED’s ..........................................................................................................................................................14
4Adding the PME GPS 0100 to Unity Pro................................................................................................15
4.1 Hardware Catalog..................................................................................................................................................15

monaghan + ENGINEERING PME GPS 0100 iv
4.2 DTM Library.............................................................................................................................................................15
5Configuring the PME GPS 0100 with Unity Pro..................................................................................17
5.1 Hardware Setup......................................................................................................................................................17
5.2 DTM Setup ................................................................................................................................................................20
5.3 Link the DTM to the PME GPS 0100 Hardware.........................................................................................22
5.4 Configure the PME GPS 0100 Module ...........................................................................................................25
5.4.1 Global Configuration.....................................................................................................................................26
5.4.2 Daylight Saving Time....................................................................................................................................26
5.4.3 Time Code Outputs........................................................................................................................................27
5.4.4 Requested Packet Interval .........................................................................................................................28
5.4.5 Mode....................................................................................................................................................................28
5.5 Build and Transfer.................................................................................................................................................28
5.6 Transfer to FDR Server........................................................................................................................................28
5.6.1 Reset the PME GPS 0100.............................................................................................................................29
6Web Browser Interface ..............................................................................................................................32
6.1 Sync Status................................................................................................................................................................32
6.2 Statistics.....................................................................................................................................................................33
6.3 Clock............................................................................................................................................................................33
6.4 GPS...............................................................................................................................................................................34
6.5 Outputs.......................................................................................................................................................................36
6.6 Module........................................................................................................................................................................36
6.7 System ........................................................................................................................................................................37
7Firmware Update..........................................................................................................................................39
7.1 Unity Loader ............................................................................................................................................................39
7.2 Boot Loader..............................................................................................................................................................39
7.2.1 Flash ....................................................................................................................................................................39
7.2.2 Password...........................................................................................................................................................40
8Specifications.................................................................................................................................................41
9Appendices .....................................................................................................................................................42
9.1 Precision Time Protocol......................................................................................................................................42
9.1.1 IEEE 1588 Technology Overview............................................................................................................42
9.1.2 Typical Performance ....................................................................................................................................43
9.2 Network Time Protocol.......................................................................................................................................43

monaghan + ENGINEERING PME GPS 0100 v
9.2.1 Clock Strata.......................................................................................................................................................44
9.2.2 Timestamps......................................................................................................................................................44
9.2.3 Leap Seconds ...................................................................................................................................................44
9.3 IRIG-B Time Code...................................................................................................................................................44
9.3.1 Time Codes .......................................................................................................................................................45
9.4 DCF-77 Time Code.................................................................................................................................................47
9.4.1 Bit Definition....................................................................................................................................................47
9.4.2 Time Code Interpretation...........................................................................................................................47
9.5 References ................................................................................................................................................................50

Introduction
monaghan + ENGINEERING PME GPS 0100 6
1Introduction
The PME GPS 0100 is a precision time server for the Schneider Electric x80 PAC platform. It
provides time for network connected devices using both Precision Time Protocol (PTP) and
Network Time Protocol (NTP). It provides time for direct connected devices using IRIG-B
time protocol and DCF-77 time protocol.
The PME GPS 0100 communicates across the ethernet backplane. For modules located in
different racks, the module operating as a time server communicates with modules
operating as clients through the ethernet ring connecting the racks. The typical error
between modules located in different racks is less than 1 microsecond.
The PME GPS 0100 has both 5 VDC and 24 VDC time code outputs. Each output is
individually programmable for 2 different time codes.
•IRIG-B
•DCF - 77
The PME GPS 0100 has been specifically designed to operate with the Schneider Electric
BMX ERT 1604 Time Stamp module. The ERT module requires either a 5 VDC IRIG-B or 24
VDC DCF-77 time code signal. The GPS module will supply either.
1.1 Operating Modes
The PME GPS 0100 will operate in one of three modes depending on its configuration
settings and the GPS receiver signal to the module.
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Introduction
monaghan + ENGINEERING PME GPS 0100 7
•When connected to a GPS 400 receiver, the PME GPS 0100 will synchronize its
internal clock with the GPS satellite and operate as a PTP master clock.
•When no GPS receiver is connected or when it is not able to receive a valid GPS
signal, the PME GPS 0100 will operate as a PTP slave clock and search for a PTP
master clock on the network. If multiple PTP master clocks are available, it will track
up to 5 master clocks and select the one with the most accurate clock.
•In some applications absolute time is not important but relative time between
devices is important. In these applications the PME GPS 0100 can be configured to
operate as a master clock using its internal crystal oscillator as a time base.
1.2 Time Sources
The PME GPS 0100 internal clock will derive its time from one of three sources.
1.2.1 Crystal Oscillator
When power is applied to the PME GPS 0100, its clock will be set from a battery backed up
real time clock and it will use a 2 part per million (PPM) Temperature Compensated Crystal
Oscillator (TCXO) as a time base.
1.2.2 GPS Receiver
The GPS 400 receiver which is used with the PME GPS 0100 provides a serial data stream
and a 1 pulse per second (PPS) reference to the module. The serial data stream provides
time, signal quality and position information to the module. The 1 PPS reference signal is
used to synchronize the PME GPS 0100 clock with the GPS satellite. The typical error of a
PME GPS 0100 clock while synchronized with a GPS receiver is less than 500 nS.
1.2.3 PTP Master Clock
When no GPS reference is available, the PME GPS 0100 will listen on the network for a PTP
master clock. If a master clock is found the module will transition from listen mode to slave
clock mode and synchronize with the PTP master clock. The typical error of a PME GPS
0100 PTP slave clock is less than 1 uS.
1.3 Network Time Protocols
The PME GPS 0100 supports PTP protocol as a master or slave and NTP protocol as a
server. The PTP protocol is used to synchronize other PTP compatible devices on the
network. The NTP protocol is used to synchronize M580 controllers.
1.3.1 Precision Time Protocol
Precision Time Protocol is a master-slave protocol with no setup. Master clocks announce
their presence on the network. Slave clocks listen for master clocks and select the master
clock with the most accurate time. The PME GPS 0100 will track up to five master clocks and
will fail over automatically should the accuracy of the master clocks change.

Introduction
monaghan + ENGINEERING PME GPS 0100 8
1.3.2 Network Time Protocol
Network Time Protocol is a client-server protocol. Each M580 controller will need to be
programmed with the IP address of the PME GPS 0100 NTP server.
1.4 Serial Time Protocols
The PME GPS 0100 has two serial time code outputs. One 5 VDC output and one 24 VDC
output. Each output can be configured to provide an IRIG-B or DCF-77 time code.
1.4.1 IRIG-B
The IRIG-B time code is one of the code formats created by the TeleCommunications
Working Group of the U.S. military's Inter-Range Instrumentation Group (IRIG), the
standards body of the Range Commanders Council. It consists of a 100 bit data frame which
is transmitted once per second. The data is encoded using pulse width modulation.
1.4.2 DCF-77
The DCF77 time code was developed for the German longwave standard frequency radio
station. It consists of a 60 bit data frame which is transmitted once per minute. The data is
encoded using pulse width modulation.

DIO Overview
monaghan + ENGINEERING PME GPS 0100 9
2DIO Overview
The PME GPS 0100 operates as an Ethernet/IP DIO device to the M580 CPU. This means
that the I/O data communication between the M580 CPU and the PME GPS 0100 is done by
means of an Ethernet/IP data exchange across the backplane. When the module is located in
the CPU rack, this data exchange happens completely across the Ethernet backplane
between the CPU and the module. In the case where the module is located in an eRIO rack,
the exchange happens across the RIO ring from the CPU through the CRA and across the
Ethernet backplane to the module. The update time of the I/O Data between the CPU and
PME GPS 0100 is controlled by the Request Packet Interval (RPI) The RPI is typically 10mS
and may be adjusted using the DTM of the module.
2.1 CPU DIO Limitations
There are several limiting factors concerning DIO use with the M580 PLC. The two most
common limits are the number of device connections and the number of bytes exchanged.
2.1.1 DIO Connection Limits
The different M580 CPU models feature limits on the number of Ethernet/IP (EIP)
connections, Modbus/TCP (MB) connections and combined EIP+MB connections.
2.1.2 DIO Byte Count Limits
Along with limitations on the number of possible DIO devices that may be connected to a
single M580 CPU, there are limits on the total number of bytes of data exchanged. The actual
limiting factor will usually be the total number of PLC Input or Output bytes used by the
DIO. Exceeding the PLC's limit on any of these items will result in a failure to build the
proposed system inside Unity Pro. The following table shows the limits for M580 CPUs.
CPU
Max EIP
DIO
Max Modbus
DIO
Max DIO
EIP+MB
Total Bytes
DIO Input
Total Bytes
DIO Output
BMEP581020
64
64
64
2048
2048
BMEP582020
128
128
128
4096
4096
BMEP582040
64
64
64
2048
2048
BMEP583020
128
128
128
4096
4096
BMEP583040
64
64
64
2048
2048
BMEP584020
128
128
128
8192
8192
BMEP584040
64
64
64
2048
2048
The PME GPS 0100 module's DTM configures 128 bytes of PLC input data and 28 bytes of
PLC output data per card. The maximum number of PMEGPS0100 cards that may be

DIO Overview
monaghan + ENGINEERING PME GPS 0100 10
installed in a 581020 CPU is limited to 16 cards. This is because having 16 cards exactly
equals the maximum allowed number of DIO input bytes for the CPU.
•16 modules x 128 bytes/module = 2048 bytes
Notice that the byte limitation includes all DIO connections from the CPU. PME modules +
Modbus/TCP slaves + Ethernet/IP slaves. Consider a 584040 CPU that is scanning 30
Holding Registers from each of 15 Modbus/TCP electric meters. This action uses 900 bytes
of the 2048 PLC inputs available.
•15 slaves x (30 register/slave) x (2 bytes/register) = 900 bytes total
This PLC would then be able to include 8 PMEGPS0100 modules.
•2048 –900 = 1148 available bytes / (128 byes/module) = 8.96 modules
2.1.3 NOC DIO
One option to consider when running into DIO byte count restrictions would be to move
some of the DIO to an BMENOC3*1 module. The NOC is capable of controlling its own DIO
on its own Ethernet ports.
NOTE: The PMEGPS 0100module is not supported as DIO in the BME NOC. PME GPS 0100
modules must be installed as M580 CPU DIO.
2.1.4 Hot Standby Implications
The PME GPS 0100 may be used in M580 Hot Standby systems (HSBY) remote Ethernet
rack. Like most DIO connections, the PLC Input data from a PME GPS 0100 module is not
“bumpless” during a transfer from Secondary to the new Primary. The Ethernet/IP
connections will be closed, and the module “Freshness” will drop to 0 during the transfer.
The data may not be available for several PLC scans after the transfer as the Ethernet/IP
connections are re-established.
2.1.5 Remote Rack Mounting Only
The PME GPS 0100 may only be used in a remote Ethernet rack in a M580 HSBY system. The
module may not be mounted in either HSBY CPU rack.