1. BRX Technical Training
POMs

2. POMs POM = Pluggable Option Module
BX-P-SER2-TERM: RS-232 port w/terminal connection
BX-P-SER4-TERM: RS-485 port w/terminal connection
BX-P-SER2-RJ12: RS-232 port w/RJ12 connection
BX-P-ECOMLT: Ethernet Communication (light) port
BX-P-USB-B: USB Type B port
All are hot-swappable

3. POMs BX-P-SER2-TERM Hardware Protocols Max bit rate: 115K
Non-isolated RS-232 serial port
ESD protection
Surge protection
Removable connector (BX-RTB03S)
Protocols
Do-more Protocol (programming, HMIs)
Modbus RTU (client/master & server/slave)
K-sequence (server/slave only)
Custom serial (e.g. ASCII)
Max bit rate: 115K
DST50 ($InstalledPOM) = 3

4. POMs BX-P-SER2-RJ12 Hardware Protocols Max bit rate: 115K
Non-isolated RS-232 serial port
ESD protection
Surge protection
RJ12 connector
Protocols
Do-more Protocol (programming, HMIs)
Modbus RTU (client/master & server/slave)
K-sequence (server/slave only)
Custom serial (e.g. ASCII)
Max bit rate: 115K
DST50 ($InstalledPOM) = 5

5. POMs BX-P-SER4-TERM Hardware Protocols Max bit rate: 115K
Non-isolated RS-485 serial port
ESD protection
Surge protection
Removable connector (BX-RTB03S)
Switch for termination resistor
Protocols
Do-more Protocol (programming, HMIs)
Modbus RTU (client/master & server/slave)
K-sequence (server/slave only)
Custom serial (e.g. ASCII)
Max bit rate: 115K
DST50 ($InstalledPOM) = 4

6. Can also setup using SETUPSER instruction
POMs Serial Modules
Configuration
Can also setup using SETUPSER instruction

7. Program Control (e.g. custom, ASCII)
POMs Serial Modules
Hot Swappable
How does the PLC react?
DST50 ($InstalledPOM) indicates which POM is installed:
0 = Unknown POM
1 = BX-P-USB-B
2 = BX-P-ECOMLT
3 = BX-P-SER2-TERM
4 = BX-P-SER4-TERM
5 = BX-P-SER2-RJ12
255 = No POM installed
PROTOCOL
INSTRUCTION
PLC REACTION
REMOVE
RE-INSTALL
Do-more
None: serves up all memory
No reaction
K-Seq Server
None: serves up DL-memory
Modbus RTU Server
None: serves up M-memory
Modbus RTU Client
MRX
MWX
Instruction errors
ST11 ($HasWarmings)
ST143 ($DriverError)
DST30 ($LastError1) = -2
ERR = “Attempted operation not supported by device in…”
Instruction resumes operation
Program Control (e.g. custom, ASCII)
STREAMIN STREAMOUT

8. POMs BX-P-USB-B Hardware Protocols DST50 ($InstalledPOM) = 1
USB Type B
USB 2.0
Protocols
Do-more Protocol (programming)
DST50 ($InstalledPOM) = 1
Nothing to configure

9. POMs BX-P-ECOMLT Hardware Protocols DST50 ($InstalledPOM) = 2
Isolated Ethernet port
Surge protection
Transmission rate:
10Mbps (orange LED)
100Mpbs (green LED)
Max 1Mpbs throughput
Protocols
Do-more protocol (server only)
Do-more Designer programming
HMI using Do-more protocol
Accepts telegrams generated by RX/WX instruction used in another Do-more’s built-in Ethernet port
DST50 ($InstalledPOM) = 2

10. Does not alter the IP Configuration stored in the POM
POMs BX-P-ECOMLT
Configuration
The POM’s IP Configuration is normally set by NetEdit3 or SETUPIP instruction
Does not alter the IP Configuration stored in the POM

11. POMs Instructions ECOMLT POM All serial POMs (SER2, SER4)
SETUPIP “Setup TCP/IP Parameters”
SETUPNOD “Setup Ethernet Node Parameters”
All serial POMs (SER2, SER4)
DEVCLEAR “Clear Device”
DEVREAD “Read Device Register”
DEVWRITE “Write Device Register”
OPENDEV “Open Device”
SETUPSER “Setup Serial Port”
STREAMIN “Stream in Data from Device”
STREAMOUT “Stream Out Data to Device”
MRX “Modbus Network Read”
MWX “Modbus Network Write”
The USB POM can only be used for programming