IRC5 TCP/IP and UDP options?

Hey, all. Quick question. Our development lab has an old (first-generation) IRC5 that we want to use for testing TCP/IP, and perhaps UDP, communication with a prototype vision system.

The key factor here is that we'll need to establish the communication in a background task that cycles every 250ms. The robot would need to act as the server, rather than the client. We'll need to open the channel on boot, and keep it open while exchanging ASCII strings indefinitely.

Now, I used to do RS-232 with IRC5s a long time ago, but never TCP/IP or UDP. So my first question is, does an IRC5 (of this age) support these protocols natively, or would we have to buy add-on options from ABB to enable this functionality?

Is there a "cut-off age" where our IRC5 might be too old to support these options?

And (probably the dumbest question): which ethernet port(s) on the IRC5 do we use?

The full contents of BACKINFO.TXT. MultiTasking appears to be installed, along with "PC Interface", which... might be the TCP/IP option?

#
# Generated backup file, do not edit.
#
# Originally at: /bd0/ABBLab_Backup_20020101
# 02-01-01  00:02:24
#
>>SYSTEM_ID:
66-51880


>>PRODUCTS_ID:
RobotWare Version: 5.15.1091.01


RW Control module key
RobotWare OS and English
709-x DeviceNet
709-2 Master/Slave Dual
608-1 World Zones
609-1 Fixed Position Events
611-1 Path Recovery
613-1 Collision Detection
614-1 FTP-client
616-1 PC Interface
617-1 FlexPendant Interface
620-1 File and Serial Channel Handling
621-1 Logical Cross Connections
622-1 Analog Signal Interrupt
623-1 Multitasking
626-1 Advanced RAPID
RW Drive module 1 key
ABB standard manipulator
IRB 6600/6650
Axis 1 standard work range
6600/2.8-175 type B
No motor fan
Add axes IRB/drive module 6600/6650/660
No drive in pos Y2


>>ROBOT_TYPE:
6600/2.8-175 type B


>>HOME:
All public files and directories


>>SYSPAR:
SYS.cfg
PROC.cfg
EIO.cfg
SIO.cfg
MOC.cfg
MMC.cfg




>>TASK1: (T_ROB1,NewProgramName,)
SYSMOD/user.sys @ user.sys
PROGMOD/MainModule.mod @ mainmodule.mod
PROGMOD/TCPXZ_tool2.mod @ tcpxz_tool2.mod
PROGMOD/Wobj_Cal.mod @ wobj_cal.mod




>>EOF:

I'll have to see if it's in the archives. I've been away from ABBs for quite a while.